Question

Expand
the
following using sultable identities
i) (3a
2b -5c)2
i) (5p - 3q)3​

Answer 1

Answer:

I) (a+b+c) ²=a²+b² +c²+2ab+2bc+2ca

put the values and signs as it is in identity

(a-b) ³=a³-b³-3ab(a-b)