Question

plz help me to to find the answer
if you don't know the answer then plz stay away ​

Answer 1

(3p²q² - 4pq + 5) + (- 10p²q²) + (15 + 9pq) + (7p²q²)

⇒ 3p²q² - 4pq + 5 - 10p²q² + 15 + 9pq + 7p²q²

⇒ 7p²q² + 3p²q²- 10p²q²  + 9pq - 4pq + 5 + 15

⇒ p²q²(7 + 3 - 10) + pq(9 - 4)  + 20

⇒ 5pq + 20

Hope it helps:)