First I'd expand the brackets so that you can re-simplify the values, so: (2x + 3)(3x + 4) 6x^2 + 9x + 8x + 12 6x^2 + 17x + 12 The answer A. 2x(3x + 4) + 3(3x + 4) can be simplified the same way, with 6x^2 + 8x + 9x + 12, and so the answer is A. I hope this helps!