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7 June, 03:41

What is an x intercept of x^2-64

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Answers (2)
  1. 7 June, 03:58
    0
    Answer: (8,0) and (-8,0)

    Step-by-step explanation: It is one positive and one negative 8 because a double positive would be a + 64 and a double negative would also be a + 64 (unless there was another x for example x^2+2x-64.

    x^2-64

    (x+8) (x-8)

    (x+8) (x-8) = 0

    x+8=0 and x-8=0

    (-8,0) and (8,0)
  2. 7 June, 04:02
    0
    (8,0) (-8,0) are the x intercepts

    Step-by-step explanation:

    Factor

    x^2 - 64

    This is the difference of squares

    (x-8) (x+8)

    Set equal to zero to find the intercepts

    x-8 = 0 x+8 = 0

    x = 8 x = - 8
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