Question

Simplify ( p+ q)² - (p-q)²+ p²q²

Answer 1

Step-by-step explanation:

A swer is

4pq+l^2q^2=pq(4+pq)

Answer 2

Answer:

4pq + p²q²

Step-by-step explanation:

( p+ q)² - (p-q)²+ p²q²

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