## Precalculus: Concepts Through Functions, A Unit Circle Approach to Trigonometry (3rd Edition)

$4 x^{3}-5 x^{2}+2 x-2$
Subtract each term of the subtrahend to obtain: $\left(4 x^{3}-7 x+1\right)-\left(5 x^{2}-9 x+3\right)$ $=4 x^{3}-7 x+1-5 x^{2}-(-9x)-3$ $=4 x^{3}-7 x+1-5 x^{2}+9 x-3$ $=4 x^{3}-5 x^{2}+(9 x-7 x)+(1-3)$ $=4 x^{3}-5 x^{2}+2 x-2$