Question

Factor the following:



2x2+9x+9

Answer 1

Answer: (2x+3)(x+3)

Explanation:

Looking at this, you know that it must look something like

(? +3)(?+3) , because they must multiply to 9. The ?s must multiply to 2x^2, the most plausible values being 2x and x, ending us up with (2x+3)(x+3)

Answer 2

(x + 3) (2x + 3)

Explanation:

2x^2+9x+9

2x^2 + 3x + 6x + 9

x(2x +3) + 3 (2x + 3)

(x + 3) (2x + 3)