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Given that the zeroes of the cubic polynomial x3-6x2+3x+10 are of the form a, a+b, q+2b, find the value of a and b as well as zeroes of the given polynomial.
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Given that the zeroes of the cubic polynomial x3-6x2+3x+10 are of the ...
Given that a, a+b, a+2b are roots of given polynomial x^3-6x^2+3x+10From this polynomial,Sum of the roots ⇒ a+2b+a+a+b = -coefficient of x^2/ coefficient of x^3 ⇒ 3a+3b = -(-6)/1 = 6 ⇒ 3(a+b) = 6 ⇒ a+b = 2 --------- (1) b = 2-aProduct of roots ⇒ (a+2b)(a+b)a = -constant/coefficient of x^3 ⇒ (a+b+b)(a+b)a = -10/1Placing the value of a+b=2 in it ⇒ (2+b)(2)a = -10 ⇒ (2+b)2a = -10 ⇒ (2+2-a)2a = -10 ⇒ (4-a)2a = -10 ⇒ 4a-a^2 = -5 ⇒ a^2-4a-5 = 0 ⇒ a^2-5a+a-5 = 0 ⇒ (a-5)(a+1) = 0 a-5 = 0 or a+1 = 0 a = 5 a = -1 a = 5, -1 in (1) a+b = 2When a = 5, 5+b=2 ⇒ b=-3 a = -1, -1+b=2 ⇒ b= 3Therefore If a=5 then b= -3 or If a= -1 then b=3
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Given that the zeroes of the cubic polynomial x3-6x2+3x+10 are of the ...
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Given that the zeroes of the cubic polynomial x3-6x2+3x+10 are of the ...
Given that the zeroes of the cubic polynomial x3-6x2+3x+10 are of the form a, a+b, q+2b, find the value of a and b as well a
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Given that the zeroes of the cubic polynomial x3-6x2+3x+10 are of the form a, a+b, q+2b, find the value of a and b as well as zeroes of the given polynomial.
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