### Home > AC > Chapter 3 > Lesson 3.1.2 > Problem3-14

3-14.

Evaluate the following expressions given the values below.

1. $ab+bc+ac\ \text{for}\ a=2, b=5, \text{and}\ c=3$

Substitute the values given for a, b, and c into the equation.

$(2)(5)+(5)(3)+(2)(3)$

$=31$

1. $\frac { 20 - x ^ { 2 } } { y - x }\ \text{for}\ x=-2\ \text{and}\ y=6$

See the hint in part (a).