Question

use suitable identity to find (3p-2q)(3p-2q)
plss guys answer as soon as possible

Answer 1

Using the form (a+b+c)2, where a=3p,b=−2q,c=r.Thus

(3p−2q+r)2=(3p)2+(−2q)2+r2+2(3p)(−2q)+2(−2q)r+2r(3p)=9p2+4q2+r2−12pq−4qr+6rp

HOPE IT HELPS♥️