Question

factorisation of (l+m)²-(l-m) ²

Answer 1

if you like it please mark me as brainliest . I have answer this question by the algebraic expression formula a square minus b square equal to a + b into a minus b

Answer 2

(l+m)^2-(l-m)^ 2
=> (l^2+m^2+2lm)-{(l^2)+(m^2)-(2lm)}
=>l^2+m^2+2lm-l^2-m^2+2lm
=> 4lm
Hope it helps u!!