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Home > PC3 > Chapter 7 > Lesson 7.1.2 > Problem 7-28

7-28.

Given , simplify each of the following expressions. Homework Help ✎

  1. Rewrite the expression with a common denominator.

    Substitute y2 with 1 − x2 from the given equation.

    Simplify.

  1. Rewrite the expression with a common denominator.
    Substitute from the given equation.

  1. Rewrite the expression in the numerator with a common denominator.
    Simplify and substitute.

    1. Multiply out.

    2. Make all fractions with the same common denominator.

    3. Simplify.