Question

What should be added to 4a²b2 - 15ab to get 9a²b2 + ab -16​

Answer 1

Answer:

5a²b²+16ab-16

Explanation:

9a²b²+ab-16 -(4a²b²-15ab)

9a²b²+ab-16-4a²b²+15ab

(9a²b²-4a²b²) + (ab+15ab) + (-16)

5a²b²+16ab+(-16)

5a²b²+16ab-16