Question

Alzebra equestion


expand the term=(p-q+2r)²​

Answer 1

to make it easy add another term X

p-q = X

(X + 2r)^2 = x^2 + 4xr + 4r^2

= (p^2 - 2pq + q^2) + 8r(p-q) + 4r^2