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20 June, 18:06

What are the solutions to x2 - 6x - 7 = 0?

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Answers (2)
  1. 20 June, 19:15
    0
    Answer: x is - 1 & 7

    Step-by-step explanation:

    X2-6x-7=0

    Quadratic equation

    Variables of - 7 that will give-6 are

    -7 & + 1

    X2-7x+x-7=0

    X (x-7) + 1 (x-7) = 0

    (X+1) (x-7) = 0

    X+1=0

    X = - 1 or

    X-7=0

    X = 7

    Therefore,

    X is either - 1 & 7
  2. 20 June, 20:24
    0
    x=7 x=-1

    Step-by-step explanation:

    x^2 - 6x - 7 = 0

    Factor

    What two numbers multiply to - 7 and add to - 6

    -7*1 = -7

    -7+1 = - 6

    (x-7) (x+1) = 0

    Using the zero product property

    x-7 = 0 x+1 = 0

    x=7 x=-1
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