Question

Simplify (2x + p - c) whole square - (2x - p + c) whole square

Answer 1

(2x + p - c)(2x - p + c)=

2x(2x - p + c)+p(2x - p + c)-c(2x - p + c)

=4x^2-2xp+2xc+2px-p^2+pc-2xc-pc-c^2

= 4x^2-p^2-^2

= [4x-p-c}^2