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For the function , find the value of for each value of given below.

  1. Substitute for and simplify.

  1. See part (a).

  1. Be careful of the signs when multiplying negative numbers.

  1. Remember how to multiply fractions.

  1. For what value(s) of does ?

    Start with the diamond problem and factor using a generic rectangle.

    Diamond problem: left negative 12, x, right 1 x, top negative 12, x squared, bottom negative 11, x. 2 by 2 Rectangle labeled as follows: top edge, x, & 4. Left edge, 1, & negative 3, x. Interior: top left, 1, x, top right, 4, bottom left, negative 3, x squared, bottom right, negative 12, x.