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Home > A2C > Chapter 4 > Lesson 4.3.2 > Problem 4-155


Multiply the expressions in parts (a) through (c) to remove the parentheses.

  1. Use a generic rectangle to multiply.

    In a rectangle, (length)(width) = area. Find the area of each small rectangle inside the generic rectangle.

    The total area of the generic rectangle, or .

  2. First, multiply  and .Then use a generic rectangle to multiply that result by .

  3. Now use a generic rectangle.

  4. Find the - and -intercepts of . The factors in part (c) should be useful.

    The -intercepts are where .

    The -intercept is where :

    from part (c).

    Using the Zero Product Property: