Question

Find the following squares by using the identifies

(a) (a-8)2

(b) (4xy +5y)​

Answer 1

Step-by-step explanation:

(a) (a-8)^2

from identity

(a-b)^2=a^2+b^2-2ab

=a^2+64+16a

(b) (4xy+5y)^2

from identity

(a+b)^2= a^2+b^2+2ab

=16.x^2.y^2+25.y^2+40.x.y^2