In the following exercises, evaluate each definite integral using the Fundamental Theorem of Calculus, Part 2. 2 170 . (x2 - 3x) dx 171 . (x' + 3x - 5) dx -2 3 172 . (t + 2) (t - 3) dt -2 173 . (12 - 9) (4 - 12) dt