070403 In Class/Homework

Expand the following function definitions. You’ll check your work on the computers. =)

1) y=(x +2)(x – 4) 2) y=(x + 9)(x +4) 3) y=(x – 2)(x – 2)

4) y = (3x + 2)(x – 1) 5) y = (x – 7)(x – 6) 6) y =(2x + 9)(3x +1)

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Determine the zeros of the following functions:

7) y =(2x – 1)(x + 4) 8) y =(4x – 3)(x – 8) 9) y =(5x – 10)(3x – 6)