Question

(p – q)(2p + q) + (p + q)(2p – q)= ?
Answer Please...

Answer 1

Step-by-step explanation:

$2 {p}^{2} + pq - 2pq - {q}^{2} + 2 {p}^{2} - pq + 2pq - {q}^{2} \\ = 4 {p}^{2} - 2 {q}^{2} \\ = 2(2 {p}^{2} - {q}^{2} )$

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