Question

Name the four types of identities in algebraic expressions. Show one examples for all the identities. ​

Answer 1

Identity I: (a + b)2 = a2 + 2ab + b2

Identity II: a2 – b2= (a + b)(a – b)

Identity III: (x + a)(x + b) = x2 + (a + b) x + ab.

Identity IV: (a + b + c)2 = a2 + b2 + c2 + 2ab + 2bc + 2ca.

Identity V: (a + b)3 = a3 + b3 + 3ab (a + b)