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2 February, 19:44

What number would you add to the equation below to complete the square? x2 - 5x = 0?

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  1. 2 February, 22:55
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    Given that x^2-5x=0, to solve it using the complete square method, we need the value of c. The quadratic equation is in the form of:

    ax^2+bx+c=0

    to get c we use the formula:

    c = (b/2a) ^2

    b=-5

    a=1

    thus

    c = (-5/2*1) ^2

    c=25/4

    the number that should be added is 25/4
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