Question

-3(x - 4) + x(2x + 3)

Answer 1

`- 3(x - 4) + x (2x + 3) \\ = - 3x + 12 + 2 {x}^(2) + 3x \\ = 2 {x}^(2) + 12 \\ = 2( {x}^(2) + 6)`

2(x^2+6) is the right answer.

Answer 2

Explanation:

-3(x - 4) + x(2x + 3)

= (-3x + 12) + (2x² + 3x)

= 2x² + 12

= 2(x² + 6).