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21 November, 19:17

If 8x = x 2 + 15, then which of the following can be used to find x?

(x + 3) (x + 5) = 0

x (8 - x) = 15

(x - 3) (x - 5) = 0

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Answers (1)
  1. 21 November, 19:34
    0
    Move 8x to the right

    0=x^2-8x+15

    Then factor

    (x-5) (x-3)

    Final answer: C
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