CPM Homework Banner

Home > CC3 > Chapter 2 > Lesson 2.1.2 > Problem 2-19

2-19.

Remember that one meaning of the word “evaluate” is to replace a variable with a number and to calculate the result. For example, evaluating the expression when results in the solution .

Evaluate the expressions below for the given values. Homework Help ✎

  1. if

    Substitute for .

    Simplify the terms and combine them.

  1. if and

    Follow the steps in part (a).

    Put everything you substituted inside parentheses so you do not lose track of your negative signs.

  1. if and

    Follow the steps in part (a).

  1. if and

    Follow the steps in part (a).