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# perfect square

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x^2 - x + c

what value of c would make the equation a perfect square

Guest Nov 15, 2017
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To find that you have to complete the square. The formula for that is $$(\frac{b}{2})^2$$.

In this equation b is -1.

$$(-\frac{1}{2})^2=\frac{1}{4}$$

So it would be $$x^2-x+\frac{1}{4}$$.