Question

From the difference of p^2 + 4pq – 3q^2 and -5pq + 2q^2 , add –p^2 – 7pq + 3q2 .^

Answer 1

Answer:

p² + 4pq - 3q² - (-5pq + 2q²)

p² + 4pq - 3q² + 5pq - 2q²

p² + 9pq - 5q²

now p² + 9pq - 5q² + (-p² - 7pq + 3q²)

p² + 9pq - 5q² - p² - 7pq + 3q²

= 2pq - 2q²