Question

Factorise using identities p^2 +8p+16

Answer 1

p2 - 8p + 16 = (p)2 - 2(4)(p) + (4)2 = (p - 4)2 [Using a2 + b2 - 2ab = (a -b)2] = (p - 4) (p - 4) Thus, p2 - 8p + 16 = (p - 4)(p - 4)