Question

49x^2 -_x + 16

Can someone help with the missing number

Answer 1

Explanation:

4x² + 28x + 49

4x² + 14x + 14x + 49

2x(2x) + 2x(7) + 7(2x) + 7(7)

2x(2x + 7) + 7(2x + 7)

(2x + 7)(2x + 7)

(2x + 7)²

= 28

Answer 2

Explanation:

I'm guessing this is competing the perfect square

so it's 56