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OpenStudy (anonymous):
X^2+4X=5 COMPLETE THE SQUARE
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OpenStudy (caozeyuan):
X^2+4X+4=7, so (X+2)^2=7
OpenStudy (anonymous):
\[x^2+4x=5\\ x^2+4x+4=5+4\\ (x+2)^2=9\]
OpenStudy (caozeyuan):
@SithsAndGiggles , sorry my typo, yes, the cons. is 9, not 7
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