Question

pls tell me all the identities of algebric expression ​

Answer 1

(a+b)^2=a^2+b^2+2ab

(a-b) ^2=a^2+b^2-2ab

(a+b+c)^2=a^2+b^2+c^2+2ab+2bc+2ac

a^2-b^2=(a+b)(a-b)

Answer 2

Algebric identities

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

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

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

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