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1 September, 02:16

How do you expand the following?

(X+8) (x-8)

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Answers (2)
  1. 1 September, 03:05
    0
    x^2-64

    Step-by-step explanation:

    (x+8) (x-8)

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

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

    =x^2-8x+8x-64

    =x^2-64
  2. 1 September, 04:45
    0
    Use the Foil method, x*x = x^2, 8x-8x = 0, 8 * (-8) = - 64, so the answer is x^2-64!
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