Question

Using suitable identity . Find each of the following = (4x - 5y)²​

Answer 1

Step-by-step explanation:

We have, (4x−5y) 2

=(4x) 2−2(4x)(5y)+(5y)

=16x 2 −40xy+25y 2

Answer 2

Answer:

Apply the formula:-

(a-b)2= a2+b2-2ab

so:-

(4x-5y)2=16x2+25y2-40xy