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21 September, 18:43

Solve the equation by completing the square. Round to the nearest hundredth if necessary. x2 - 2x = 24

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  1. 21 September, 21:36
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    X^2-2x+1=24+1

    (x-1) ^2=25

    x-1=5

    x=5+1

    x=6

    Basically, to complete the square, take the number in the term - 2x, divide by 2, and square it.

    So:

    (-2/2) ^2=1

    this is the number that has to be after - 2x to complete the square

    Add 1 to make x^2-2x into x^2-2x+1 (make sure to add 1 on the other side too), then solve for x
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