### Home > AC > Chapter 7 > Lesson 7.3.3 > Problem7-109

7-109.

Evaluate the expressions below for the given values.

1. $−2x^{2} − 3x + 1$ for $x = −3$

Substitute the given value in for the variable and then follow the order of operations to evaluate.

$−2\left(−3\right)² − 3\left(−3\right) + 1 \\−2\left(9\right) − \left(−9\right) + 1 \\−18 +10 \\ −8$

1. $8− \left(3x − 2\right)^{2}$ for $x = −2$

Follow the steps shown in part (a) to solve part (b).

$−56$

1. $\frac{-3}{k+2}$ for $k = -3$

Use the same strategy as part (a) to solve part (c).

1. $\frac{15m}{n+1}-m^2+n$ for $m = 1$, $n = 2$

See the method used in part (a) for help solving part (d). Remember to substitute for both variables.