Question

(3a-1/2)(3a-1/2)suitable identity

Answer 1

Here, We can use the identity
(a -b)^2 = a^2+b^2-2ab.
Now,
(3a-1/2)^2
= (3a)^2+(1/2)^2- 2*3a*1/2
= 9a^2 + 1- 3a.

Hope it will help.....