Question

algebric identities for class 9

Answer 1

Step-by-step explanation:

i hope this may help you

Answer 2

Answer:

(x+y)²= x²+2xy+y²

(x-y)²= x²-2xy+y²

(x+y) (x-y) =x²- y²

(x+a) (x+b) = x²+(a+b)x+ ab

(x+y+z)²=x²+y²+z²+2xy+2yz+2zy

(x+y)³=x³+3x²y+3xy²+y³

(x-y)³=x³-3x²y+3xy²-y³

x³+y³+z³-3xyz=(x+y+z)(x²+y²+z²-xy-yz-zx)