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Home > AC > Chapter 2 > Lesson 2.1.9 > Problem 2-90

2-90.

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

  1. Substitute the given values for the variables and .

    Simplify the expression.

  1.  

    Substitute in the expression. Then simplify.

  1.  

    After substituting , the expression becomes:

    Simplify. Be sure to multiply the and before squaring!

  1. Replace each , and then simplify the expression.