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8 August, 07:13

A quadratic function is defined by f (x) = (x-7) (x+3) Without graphing, identify the x-intercept, starting with one with the larger x value. Write your answer in the following format: (x, y)

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  1. 8 August, 10:12
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    (7, 0), (-3, 0)

    Step-by-step explanation:

    The x-intercepts are the values of x that make the factors zero. A zero factor makes the value of the function be zero.

    x - 7 = 0 ⇒ x = 7

    x + 3 = 0 ⇒ x = - 3

    The corresponding (x, y) coordinates are ...

    (7, 0), (-3, 0)
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