Question

Answer this quickly i will mark you as brainlist please answer​

Answer 1

Answer:

3. 4a(a + 1) - 15

step-by-step explanation:

1. (x +y)² + 11 (x + y) + 30

= x + y {(x +y) + 11} + 30

2. (a - b)² - 16(a - b) + 60

= (a - b){(a - b) - 16} + 60

3. 4a² + 4a - 15) - 15

4. 2x² + 5x + 2

= x(2x + 5) + 2