When 5 is subtracted from the square of a number, the result is 4 times the number. Find the negative solution.

Question

When 5 is subtracted from the square of a number, the result is 4 times the number. Find the negative solution.

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Arianna 3 weeks 2021-11-20T15:06:10+00:00 1 Answer 0 views 0

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    2021-11-20T15:07:52+00:00

    Answer:

    x=-5\\x=1

    Step-by-step explanation:

    5-x^2=4x

    subtract 4x on both sides.

    5-x^2-4x=0

    -x^2-4x+5=0

    Since x cannot be negative, multiply by -1.

    (-1)(-x^2-4x+5=0)\\x^2+4x-5=0

    (x+5)(x-1)=0

    x+5=0\\x=-5

    ——————————–

    x-1=0\\x=1

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45:7+7-4:2-5:5*4+35:2 =? ( )