Algebraic Expressions & Identities Class 8 PPT

 Page 1


IMPORTANT WORDS OR TERMS
? Expression
? Terms
? Monomial
? Binomial
? Trinomial
? Polynomial
? Liketerms
? Unliketerms
? Co-efficient
? Factors
? Identity
Page 2


IMPORTANT WORDS OR TERMS
? Expression
? Terms
? Monomial
? Binomial
? Trinomial
? Polynomial
? Liketerms
? Unliketerms
? Co-efficient
? Factors
? Identity
EXPRESSIONS
? Expressionsareformed byusingvariablesandconstants.
? Forexample,
?x+3
?2y –5
?3x²
?4xy+7
? If we take the example of 2y – 5 , it is made up of y as
thevariableand2,(-5)astheconstants.
Page 3


IMPORTANT WORDS OR TERMS
? Expression
? Terms
? Monomial
? Binomial
? Trinomial
? Polynomial
? Liketerms
? Unliketerms
? Co-efficient
? Factors
? Identity
EXPRESSIONS
? Expressionsareformed byusingvariablesandconstants.
? Forexample,
?x+3
?2y –5
?3x²
?4xy+7
? If we take the example of 2y – 5 , it is made up of y as
thevariableand2,(-5)astheconstants.
TERMS
? Termsareaddedtoformexpressions.
? Forexample,
? 5ab+90 :{(5ab)+(90)}
? 14gh –13 :{(14gh)+(-13)}i.e.{(14gh) –(13)}
? 56m³ + 65 – yz :{(56m³) + (65) + (-yz)} i.e. {(56m³) + (65)
-(yz)}
? Terms are commonly made up of co – efficients, variables or
constants.
Page 4


IMPORTANT WORDS OR TERMS
? Expression
? Terms
? Monomial
? Binomial
? Trinomial
? Polynomial
? Liketerms
? Unliketerms
? Co-efficient
? Factors
? Identity
EXPRESSIONS
? Expressionsareformed byusingvariablesandconstants.
? Forexample,
?x+3
?2y –5
?3x²
?4xy+7
? If we take the example of 2y – 5 , it is made up of y as
thevariableand2,(-5)astheconstants.
TERMS
? Termsareaddedtoformexpressions.
? Forexample,
? 5ab+90 :{(5ab)+(90)}
? 14gh –13 :{(14gh)+(-13)}i.e.{(14gh) –(13)}
? 56m³ + 65 – yz :{(56m³) + (65) + (-yz)} i.e. {(56m³) + (65)
-(yz)}
? Terms are commonly made up of co – efficients, variables or
constants.
MONOMIAL
? An expression comprising of only one (1) term is known
asaMONOMIAL.
? Forexample,
? 5x
? 2y²
? 6mn
? 90a
? -9q
? 10cd
? -11
? xyz
Page 5


IMPORTANT WORDS OR TERMS
? Expression
? Terms
? Monomial
? Binomial
? Trinomial
? Polynomial
? Liketerms
? Unliketerms
? Co-efficient
? Factors
? Identity
EXPRESSIONS
? Expressionsareformed byusingvariablesandconstants.
? Forexample,
?x+3
?2y –5
?3x²
?4xy+7
? If we take the example of 2y – 5 , it is made up of y as
thevariableand2,(-5)astheconstants.
TERMS
? Termsareaddedtoformexpressions.
? Forexample,
? 5ab+90 :{(5ab)+(90)}
? 14gh –13 :{(14gh)+(-13)}i.e.{(14gh) –(13)}
? 56m³ + 65 – yz :{(56m³) + (65) + (-yz)} i.e. {(56m³) + (65)
-(yz)}
? Terms are commonly made up of co – efficients, variables or
constants.
MONOMIAL
? An expression comprising of only one (1) term is known
asaMONOMIAL.
? Forexample,
? 5x
? 2y²
? 6mn
? 90a
? -9q
? 10cd
? -11
? xyz
BINOMIAL
? An expression having two (2) terms is known to be a
BINOMIAL.
? Forexample,
? a+b
? 4l+5m
? a+4
? 5 –3xy
? z²-4y
? 7x²-4xy
? 6y+6
? 5k²-4np²