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OpenStudy (anonymous):
explain why there are two solutions to the equation x^2=9
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OpenStudy (anonymous):
I know the answer is 3,-3
OpenStudy (astrophysics):
When you take the square root of something you get a positive and negative value
OpenStudy (astrophysics):
\[x^2 = 9 \implies x = \pm \sqrt{9}\]
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