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16 July, 02:58

Solve. x 2 - 5x-8=0 x2-5x-8=0 Enter your answers, as exact values, in the boxes. x = or x =

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  1. 16 July, 05:49
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    x2-5x-8=0

    Step-by-step explanation:

    Two solutions were found:

    x = (5-√57) / 2=-1.275

    x = (5+√57) / 2 = 6.275

    Reformatting the input:

    Changes made to your input should not affect the solution:

    (1) : "x2" was replaced by "x^2".

    Step by step solution:

    Step 1:

    Trying to factor by splitting the middle term

    1.1 Factoring x2-5x-8

    The first term is, x2 its coefficient is 1.

    The middle term is, - 5x its coefficient is - 5.

    The last term, "the constant", is - 8

    Step-1 : Multiply the coefficient of the first term by the constant 1 • - 8 = - 8

    Step-2 : Find two factors of - 8 whose sum equals the coefficient of the middle term, which is - 5.

    -8 + 1 = - 7

    -4 + 2 = - 2

    -2 + 4 = 2

    -1 + 8 = 7
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