What value should be added to the expression to create a perfect square

Algebra
Tutor: None Selected Time limit: 1 Day

x^2-20x

Mar 10th, 2015

x^2-20x=x^2-2*10x

So we need to add 10^2 or 100 to the expression to create a perfect square (x-10)^2

Mar 10th, 2015

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Mar 10th, 2015
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Mar 10th, 2015
Dec 3rd, 2016
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