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Page 1 Q u e s t i o n : 5 0 Factorize each of the following expressions: qr - pr + qs - ps S o l u t i o n : qr-pr+qs -ps = (qr-pr)+(qs -ps) [Grouping the expressions] = r(q -p)+s(q -p) = (r+s)(q -p) [Taking (q -p) as the common factor] Q u e s t i o n : 5 1 Factorize each of the following expressions: p 2 q - pr 2 - pq + r 2 S o l u t i o n : p 2 q -pr 2 -pq +r 2 = p 2 q -pq + r 2 -pr 2 Grouping the expressions = pq p -1 +r 2 1 -p = pq p -1 -r 2 p -1 ? 1 -p = - p -1 = pq -r 2 p -1 Taking p -1 as the commo Q u e s t i o n : 5 2 Factorize each of the following expressions: 1 + x + xy + x 2 y S o l u t i o n : 1 +x +xy +x 2 y = 1 +x + xy +x 2 y Grouping the expressions = 1 +x +xy 1 +x = 1 +xy 1 +x Taking 1 +x as the common factor Q u e s t i o n : 5 3 Factorize each of the following expressions: ax + ay - bx - by S o l u t i o n : ax +ay -bx -by = (ax +ay)-(bx +by) [Grouping the expressions] = a(x +y)-b(x +y) = (a -b)(x +y) [Taking (x +y) as the common factor] Q u e s t i o n : 5 4 Factorize each of the following expressions: xa 2 + xb 2 - ya 2 - yb 2 S o l u t i o n : xa 2 +xb 2 -ya 2 -yb 2 = xa 2 +xb 2 - ya 2 +yb 2 Grouping the expressions = x a 2 +b 2 -y a 2 +b 2 = x -y a 2 +b 2 Taking a 2 +b 2 as the common factor Q u e s t i o n : 5 5 Factorize each of the following expressions: x 2 + xy + xz + yz S o l u t i o n : x 2 +xy +xz +yz = x 2 +xy + xz +yz Grouping the expressions = x x +y +z x +y = x +z x +y Taking x +y as the common factor = x +y x +z Q u e s t i o n : 5 6 Factorize each of the following expressions: 2ax + bx + 2ay + by S o l u t i o n : 2ax +bx +2ay +by = (2ax +bx)+(2ay +by) [Grouping the expressions] = x(2a +b)+y(2a +b) = (x +y)(2a +b) [Taking (2a +b) as the common factor] Q u e s t i o n : 5 7 Factorize each of the following expressions: ab - by - ay + y 2 S o l u t i o n : ab -by -ay +y 2 = ab -ay + y 2 -by Grouping the expressions = a b -y +y y -b = a b -y -y b -y ? y -b = - b -y = a -y b -y Taking b -y ( ) ( ) [ ] ( ) ( ) ( ) ( ) [ ( ) ( )] ( ) ( ) [ ( ) ( ) ( ) [ ] ( ) ( ) ( ) ( ) [ ( ) ] ( ) ( ) [ ] ( ) ( ) ( ) ( ) [ ( ) ] ( ) ( ) [ ] ( ) ( ) ( ) ( ) [ ( ) ] ( ) ( ) ( ) ( ) [ ] ( ) ( ) ( ) ( ) [ ( ) ( )] ( ) ( ) [ ( Page 2 Q u e s t i o n : 5 0 Factorize each of the following expressions: qr - pr + qs - ps S o l u t i o n : qr-pr+qs -ps = (qr-pr)+(qs -ps) [Grouping the expressions] = r(q -p)+s(q -p) = (r+s)(q -p) [Taking (q -p) as the common factor] Q u e s t i o n : 5 1 Factorize each of the following expressions: p 2 q - pr 2 - pq + r 2 S o l u t i o n : p 2 q -pr 2 -pq +r 2 = p 2 q -pq + r 2 -pr 2 Grouping the expressions = pq p -1 +r 2 1 -p = pq p -1 -r 2 p -1 ? 1 -p = - p -1 = pq -r 2 p -1 Taking p -1 as the commo Q u e s t i o n : 5 2 Factorize each of the following expressions: 1 + x + xy + x 2 y S o l u t i o n : 1 +x +xy +x 2 y = 1 +x + xy +x 2 y Grouping the expressions = 1 +x +xy 1 +x = 1 +xy 1 +x Taking 1 +x as the common factor Q u e s t i o n : 5 3 Factorize each of the following expressions: ax + ay - bx - by S o l u t i o n : ax +ay -bx -by = (ax +ay)-(bx +by) [Grouping the expressions] = a(x +y)-b(x +y) = (a -b)(x +y) [Taking (x +y) as the common factor] Q u e s t i o n : 5 4 Factorize each of the following expressions: xa 2 + xb 2 - ya 2 - yb 2 S o l u t i o n : xa 2 +xb 2 -ya 2 -yb 2 = xa 2 +xb 2 - ya 2 +yb 2 Grouping the expressions = x a 2 +b 2 -y a 2 +b 2 = x -y a 2 +b 2 Taking a 2 +b 2 as the common factor Q u e s t i o n : 5 5 Factorize each of the following expressions: x 2 + xy + xz + yz S o l u t i o n : x 2 +xy +xz +yz = x 2 +xy + xz +yz Grouping the expressions = x x +y +z x +y = x +z x +y Taking x +y as the common factor = x +y x +z Q u e s t i o n : 5 6 Factorize each of the following expressions: 2ax + bx + 2ay + by S o l u t i o n : 2ax +bx +2ay +by = (2ax +bx)+(2ay +by) [Grouping the expressions] = x(2a +b)+y(2a +b) = (x +y)(2a +b) [Taking (2a +b) as the common factor] Q u e s t i o n : 5 7 Factorize each of the following expressions: ab - by - ay + y 2 S o l u t i o n : ab -by -ay +y 2 = ab -ay + y 2 -by Grouping the expressions = a b -y +y y -b = a b -y -y b -y ? y -b = - b -y = a -y b -y Taking b -y ( ) ( ) [ ] ( ) ( ) ( ) ( ) [ ( ) ( )] ( ) ( ) [ ( ) ( ) ( ) [ ] ( ) ( ) ( ) ( ) [ ( ) ] ( ) ( ) [ ] ( ) ( ) ( ) ( ) [ ( ) ] ( ) ( ) [ ] ( ) ( ) ( ) ( ) [ ( ) ] ( ) ( ) ( ) ( ) [ ] ( ) ( ) ( ) ( ) [ ( ) ( )] ( ) ( ) [ ( Q u e s t i o n : 5 8 Factorize each of the following expressions: axy + bcxy - az - bcz S o l u t i o n : axy +bcxy -az -bcz = (axy +bcxy)-(az +bcz) [Grouping the expressions] = xy(a +bc)-z(a +bc) = (xy -z)(a +bc) [Taking (a +bc) as the common factor] Q u e s t i o n : 5 9 Factorize each of the following expressions: lm 2 - mn 2 - lm + n 2 S o l u t i o n : lm 2 -mn 2 -lm +n 2 = lm 2 -lm + n 2 -mn 2 Regrouping the expressions = lm m -1 +n 2 1 -m = lm m -1 -n 2 m -1 ? 1 -m = - m -1 Q u e s t i o n : 6 0 Factorize each of the following expressions: x 3 - y 2 + x - x 2 y 2 S o l u t i o n : x 3 -y 2 +x -x 2 y 2 = x 3 +x - x 2 y 2 +y 2 Regrouping the expressions = x x 2 +1 -y 2 x 2 +1 = x -y 2 x 2 +1 Taking x 2 +1 as the common factor Q u e s t i o n : 6 1 Factorize each of the following expressions: 6xy + 6 - 9y - 4x S o l u t i o n : 6xy +6 -9y -4x = (6xy -4x)+(6 -9y) [Regrouping the expressions] = 2x(3y -2)+3(2 -3y) = 2x(3y -2)-3(3y -2) [ ? (2 -3y) = -(3y -2)] = (2 Q u e s t i o n : 6 2 Factorize each of the following expressions: x 2 - 2ax - 2ab + bx S o l u t i o n : x 2 -2ax -2ab +bx = x 2 -2ax + bx -2ab Regrouping the expressions = x x -2a +b x -2a = x +b x -2a Taking x -2a as the common factor = x -2a x +b Q u e s t i o n : 6 3 Factorize each of the following expressions: x 3 - 2x 2 y + 3xy 2 - 6y 3 S o l u t i o n : x 3 - 2x 2 y + 3xy 2 - 6y 3 = x 3 -2x 2 y + 3xy 2 -6y 3 Grouping the expressions = x 2 x -2y +3y 2 x -2y = x 2 +3y 2 x -2y Taking x -2y as the common factor Q u e s t i o n : 6 4 Factorize each of the following expression: abx 2 + (ay - b) x - y S o l u t i o n : abx 2 + ay -b x -y = abx 2 +axy -bx -y = abx 2 -bx + axy -y Regrouping the expressions = bx ax -1 +y ax -1 = bx Q u e s t i o n : 6 5 Factorize each of the following expression: (ax + by) 2 + (bx - ay) 2 S o l u t i o n : ax +by) 2 + bx -ay) 2 = a 2 x 2 +2abxy +b 2 y 2 +b 2 x 2 -2abxy +a 2 y 2 = a 2 x 2 +b 2 y 2 +b 2 x 2 +a 2 y 2 = a 2 x 2 +a 2 y 2 + b 2 x 2 +b 2 y 2 Regrouping the ex Q u e s t i o n : 6 6 Factorize each of the following expression: 16(a - b) 3 - 24 (a - b) 2 S o l u t i o n : 16 a -b) 3 -24 a -b) 2 = 8 a -b) 2 2 a -b -3 Taking 8 a -b) 2 as the common factor = 8 a -b) 2 2a -2b -3 Q u e s t i o n : 6 7 Factorize each of the following expression: ab(x 2 + 1) + x(a 2 + b 2 ) S o l u t i o n : ab x 2 +1 +x a 2 +b 2 = abx 2 +ab +a 2 x +b 2 x = abx 2 +a 2 x + b 2 x +ab Regrouping the expressions = ax bx +a +b bx +a Q u e s t i o n : 6 8 Factorize each of the following expression: a 2 x 2 + (ax 2 + 1)x + a S o l u t i o n : a 2 x 2 + ax 2 +1 x +a = a 2 x 2 +ax 3 +x +a = ax 3 +a 2 x 2 + x +a Regrouping the expressions = ax 2 x +a + x +a = ax Q u e s t i o n : 6 9 Factorize each of the following expression: a(a - 2b - c) + 2bc S o l u t i o n : ( ) ( ) [ ] ( ) ( ) ( ) ( ) [ ( ) ( )] ( ) ( ) [ ] ( ) ( ) ( ) ( ) [ ( ) ] ( ) ( ) [ ] ( ) ( ) ( ) ( ) [ ( ) ] ( ) ( ) ( ) ( ) [ ] ( ) ( ) ( ) ( ) [ ( ) ] ( ) ( ) ( ) [ ] ( ) ( ) ( ( ( ( ) ( ) [ ( ( ( [ ( ) ] { [ ( ] } ( ( ) ( ) ( ) ( ) ( ) [ ] ( ) ( ) ( ) ( ) ( ) [ ] ( ) ( ) ( ( ) ( ) ( ) [ ] ( ) ( ) ( ) ( Page 3 Q u e s t i o n : 5 0 Factorize each of the following expressions: qr - pr + qs - ps S o l u t i o n : qr-pr+qs -ps = (qr-pr)+(qs -ps) [Grouping the expressions] = r(q -p)+s(q -p) = (r+s)(q -p) [Taking (q -p) as the common factor] Q u e s t i o n : 5 1 Factorize each of the following expressions: p 2 q - pr 2 - pq + r 2 S o l u t i o n : p 2 q -pr 2 -pq +r 2 = p 2 q -pq + r 2 -pr 2 Grouping the expressions = pq p -1 +r 2 1 -p = pq p -1 -r 2 p -1 ? 1 -p = - p -1 = pq -r 2 p -1 Taking p -1 as the commo Q u e s t i o n : 5 2 Factorize each of the following expressions: 1 + x + xy + x 2 y S o l u t i o n : 1 +x +xy +x 2 y = 1 +x + xy +x 2 y Grouping the expressions = 1 +x +xy 1 +x = 1 +xy 1 +x Taking 1 +x as the common factor Q u e s t i o n : 5 3 Factorize each of the following expressions: ax + ay - bx - by S o l u t i o n : ax +ay -bx -by = (ax +ay)-(bx +by) [Grouping the expressions] = a(x +y)-b(x +y) = (a -b)(x +y) [Taking (x +y) as the common factor] Q u e s t i o n : 5 4 Factorize each of the following expressions: xa 2 + xb 2 - ya 2 - yb 2 S o l u t i o n : xa 2 +xb 2 -ya 2 -yb 2 = xa 2 +xb 2 - ya 2 +yb 2 Grouping the expressions = x a 2 +b 2 -y a 2 +b 2 = x -y a 2 +b 2 Taking a 2 +b 2 as the common factor Q u e s t i o n : 5 5 Factorize each of the following expressions: x 2 + xy + xz + yz S o l u t i o n : x 2 +xy +xz +yz = x 2 +xy + xz +yz Grouping the expressions = x x +y +z x +y = x +z x +y Taking x +y as the common factor = x +y x +z Q u e s t i o n : 5 6 Factorize each of the following expressions: 2ax + bx + 2ay + by S o l u t i o n : 2ax +bx +2ay +by = (2ax +bx)+(2ay +by) [Grouping the expressions] = x(2a +b)+y(2a +b) = (x +y)(2a +b) [Taking (2a +b) as the common factor] Q u e s t i o n : 5 7 Factorize each of the following expressions: ab - by - ay + y 2 S o l u t i o n : ab -by -ay +y 2 = ab -ay + y 2 -by Grouping the expressions = a b -y +y y -b = a b -y -y b -y ? y -b = - b -y = a -y b -y Taking b -y ( ) ( ) [ ] ( ) ( ) ( ) ( ) [ ( ) ( )] ( ) ( ) [ ( ) ( ) ( ) [ ] ( ) ( ) ( ) ( ) [ ( ) ] ( ) ( ) [ ] ( ) ( ) ( ) ( ) [ ( ) ] ( ) ( ) [ ] ( ) ( ) ( ) ( ) [ ( ) ] ( ) ( ) ( ) ( ) [ ] ( ) ( ) ( ) ( ) [ ( ) ( )] ( ) ( ) [ ( Q u e s t i o n : 5 8 Factorize each of the following expressions: axy + bcxy - az - bcz S o l u t i o n : axy +bcxy -az -bcz = (axy +bcxy)-(az +bcz) [Grouping the expressions] = xy(a +bc)-z(a +bc) = (xy -z)(a +bc) [Taking (a +bc) as the common factor] Q u e s t i o n : 5 9 Factorize each of the following expressions: lm 2 - mn 2 - lm + n 2 S o l u t i o n : lm 2 -mn 2 -lm +n 2 = lm 2 -lm + n 2 -mn 2 Regrouping the expressions = lm m -1 +n 2 1 -m = lm m -1 -n 2 m -1 ? 1 -m = - m -1 Q u e s t i o n : 6 0 Factorize each of the following expressions: x 3 - y 2 + x - x 2 y 2 S o l u t i o n : x 3 -y 2 +x -x 2 y 2 = x 3 +x - x 2 y 2 +y 2 Regrouping the expressions = x x 2 +1 -y 2 x 2 +1 = x -y 2 x 2 +1 Taking x 2 +1 as the common factor Q u e s t i o n : 6 1 Factorize each of the following expressions: 6xy + 6 - 9y - 4x S o l u t i o n : 6xy +6 -9y -4x = (6xy -4x)+(6 -9y) [Regrouping the expressions] = 2x(3y -2)+3(2 -3y) = 2x(3y -2)-3(3y -2) [ ? (2 -3y) = -(3y -2)] = (2 Q u e s t i o n : 6 2 Factorize each of the following expressions: x 2 - 2ax - 2ab + bx S o l u t i o n : x 2 -2ax -2ab +bx = x 2 -2ax + bx -2ab Regrouping the expressions = x x -2a +b x -2a = x +b x -2a Taking x -2a as the common factor = x -2a x +b Q u e s t i o n : 6 3 Factorize each of the following expressions: x 3 - 2x 2 y + 3xy 2 - 6y 3 S o l u t i o n : x 3 - 2x 2 y + 3xy 2 - 6y 3 = x 3 -2x 2 y + 3xy 2 -6y 3 Grouping the expressions = x 2 x -2y +3y 2 x -2y = x 2 +3y 2 x -2y Taking x -2y as the common factor Q u e s t i o n : 6 4 Factorize each of the following expression: abx 2 + (ay - b) x - y S o l u t i o n : abx 2 + ay -b x -y = abx 2 +axy -bx -y = abx 2 -bx + axy -y Regrouping the expressions = bx ax -1 +y ax -1 = bx Q u e s t i o n : 6 5 Factorize each of the following expression: (ax + by) 2 + (bx - ay) 2 S o l u t i o n : ax +by) 2 + bx -ay) 2 = a 2 x 2 +2abxy +b 2 y 2 +b 2 x 2 -2abxy +a 2 y 2 = a 2 x 2 +b 2 y 2 +b 2 x 2 +a 2 y 2 = a 2 x 2 +a 2 y 2 + b 2 x 2 +b 2 y 2 Regrouping the ex Q u e s t i o n : 6 6 Factorize each of the following expression: 16(a - b) 3 - 24 (a - b) 2 S o l u t i o n : 16 a -b) 3 -24 a -b) 2 = 8 a -b) 2 2 a -b -3 Taking 8 a -b) 2 as the common factor = 8 a -b) 2 2a -2b -3 Q u e s t i o n : 6 7 Factorize each of the following expression: ab(x 2 + 1) + x(a 2 + b 2 ) S o l u t i o n : ab x 2 +1 +x a 2 +b 2 = abx 2 +ab +a 2 x +b 2 x = abx 2 +a 2 x + b 2 x +ab Regrouping the expressions = ax bx +a +b bx +a Q u e s t i o n : 6 8 Factorize each of the following expression: a 2 x 2 + (ax 2 + 1)x + a S o l u t i o n : a 2 x 2 + ax 2 +1 x +a = a 2 x 2 +ax 3 +x +a = ax 3 +a 2 x 2 + x +a Regrouping the expressions = ax 2 x +a + x +a = ax Q u e s t i o n : 6 9 Factorize each of the following expression: a(a - 2b - c) + 2bc S o l u t i o n : ( ) ( ) [ ] ( ) ( ) ( ) ( ) [ ( ) ( )] ( ) ( ) [ ] ( ) ( ) ( ) ( ) [ ( ) ] ( ) ( ) [ ] ( ) ( ) ( ) ( ) [ ( ) ] ( ) ( ) ( ) ( ) [ ] ( ) ( ) ( ) ( ) [ ( ) ] ( ) ( ) ( ) [ ] ( ) ( ) ( ( ( ( ) ( ) [ ( ( ( [ ( ) ] { [ ( ] } ( ( ) ( ) ( ) ( ) ( ) [ ] ( ) ( ) ( ) ( ) ( ) [ ] ( ) ( ) ( ( ) ( ) ( ) [ ] ( ) ( ) ( ) ( a a -2b -c +2bc = a 2 -2ab -ac +2bc = a 2 -ac + 2bc -2ab Regrouping the terms = a a -c +2b c -a = a a -c -2b Q u e s t i o n : 7 0 Factorize each of the following expression: a(a + b - c) - bc S o l u t i o n : a a +b -c -bc = a 2 +ab -ac -bc = a 2 -ac + ab -bc Regrouping the expressions = a a -c +b a -c = a +b a -c Taki Q u e s t i o n : 7 1 Factorize each of the following expression: x 2 - 11xy - x + 11y S o l u t i o n : x 2 -11xy -x +11y = x 2 -x + 11y -11xy Regrouping the expressions = x x -1 +11y 1 -x = x x -1 -11y x -1 ? 1 -x = - x -1 Q u e s t i o n : 7 2 Factorize each of the following expression: ab - a - b + 1 S o l u t i o n : ab -a -b +1 = (ab -b)+(1 -a) [Regrouping the expressions] = b(a -1)+(1 -a) = b(a -1)-(a -1) [ ? (1 -a) = -(a -1)] = (a -1)(b -1) [Taking out the c Q u e s t i o n : 7 3 Factorize each of the following expression: x 2 + y - xy - x S o l u t i o n : x 2 +y -xy -x = x 2 -xy + y -x Regrouping the expressions = x x -y + y -x = x x -y - x -y ? y -x = - x -y = x -1 x -y ( ) ( ) ( ) [ ] ( ) ( ) ( ) ( ( ) ( ) ( ) [ ] ( ) ( ) ( ) ( ) [ ( ) ( ) [ ] ( ) ( ) ( ) ( ) [ ( ) ( )] ( ) ( ) [ ] ( ) ( ) ( ) ( ) [ ( ) ( )] ( ) ( )Read More
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