Question 3(v) Find the following squares by using identities: (0.4p−0.5q)2
(0.4p−0.5q)2=(0.4p)2−2×0.4p×0.5q+(0.5q)2 [Using identity (a−b)2=a2−2ab+b2] =0.16p2−0.40pq+0.25q2
Question 3(iii) Find the following squares by using identities: (6x2−5y)2