Question

algebric identities class 8​

Answer 1

Answer:

An algebraic identity is an equality that holds for any values of its variables. For example, the identity ( x + y ) 2 = x 2 + 2 x y + y 2 (x+y)^2 = x^2 + 2xy + y^2 (x+y)2=x2+2xy+y2 holds for all values of x and y.

Answer 2

ALGEBRIC IDENTITIES :-

$\sf{=>(x + y)(z + a) = xz + \: xy \: + yz + \: ya}$

$\sf{= > ({a \: + b})^{2} = {a}^{2} + 2ab + {b}^{2}}$

$\sf{ = > ({a \: - b})^{2} = {a}^{2} - 2ab + {b}^{2}}$

$\sf{= > (a \: + b)(a - b) = {a}^{2} - {b}^{2}}$