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12 September, 10:06

What are the roots of the polynomial equation? x2+6x-72=0 Enter your answers in the boxes. x = or x=

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Answers (2)
  1. 12 September, 13:18
    0
    I think is ... X = 6, - 12
  2. 12 September, 13:25
    0
    I found 2 numbers, which had to add to give 6 and multiply to give - 72

    To do this, I listed out the factors of 72 and got

    -12 * 6 = - 72

    -12 + 6 = 6

    So I know the roots will be

    X = - 12

    X = 6
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