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Home > CC1 > Chapter 8 > Lesson 8.1.4 > Problem 8-55

8-55.

Use the Distributive Property to rewrite each expression below. Then evaluate each expression for and .  

  1.  

    Think of this expression as .

    Using the Distributive Property, the expression becomes
    . When is substituted for y, the expression becomes

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    Think of the expression as .

    The expression becomes . Now substitute for .

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    Both numbers and variables can be factored out together. Solve this one like you did part (a).

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    Be careful with the variables. Remember that because the variables are different, they cannot be factored out. However, there is a number that can be factored out.