(x+3)(x-4)
Expand the following: (x + 3) (x - 4)
(x + 3) (x - 4) = (x) (x) + (x) (-4) + (3) (x) + (3) (-4): x x + 3 x - 4 x - 4 3
x x = x^2: x^2 + 3 x - 4 x - 4 3
-4×3 = -12: x^2 + 3 x - 4 x + -12
3 x - 4 x = -x: Answer: |x^2 - x - 12
