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OpenStudy (anonymous):
What value is added to both sides of the equation x2 - 4x = -2 in order to solve by completing the square?
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OpenStudy (anonymous):
x^2 - 4x +(-4/2)^2= -2+(-4/2)^2
OpenStudy (anonymous):
these are the answer choices though: 4 2 -2 -4
OpenStudy (anonymous):
4
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