Question

What is (b-a-y) whole square

Answer 1

For this we should know that what is the formula of (a+b+c)²

(b-a-y)²=(b)²+(-a)²+(-y)²+2[ (b)(-a)+(-a)(-y)+(-y)(b)]
=b²+a²+y²-2ab+2ay-2by
i hope it is helpful.......