Question

(l+m)^2-4lm?can u send me a pic​

Answer 1

Answer:

(l+m)^2 - 4lm

=> l^2 +m^2 +2lm - 4lm

=> l^2 +m^2 - 2lm

=> l^2 + m^2 - 2(l)(m)

=> (l-m) ^2

HOPE THIS HELPS...