Question

(p+q)^2 +(2p-q)(2p+q)

Answer 1

(p+q)² + (2p-q)(2p+q)
= (p+q)² + (2p²)-q²
=p²+2pq+q²+4p²-q²
=5p²+2pq atau p(5p+2q)

semoga membantu :)