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OpenStudy (sissyedgar):
Solve the equation. If necessary, round your answer to the nearest tenth. x² = 324 A. –18, 18 B. 18 C. –162, 162 D. 162 Im not sure if it would be A. or B.
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OpenStudy (mysticfury):
well if we take -18 x -18 do we still get positive 324?
OpenStudy (sissyedgar):
Oh.. Yah
OpenStudy (mysticfury):
then -18 is correct as well :)
OpenStudy (sissyedgar):
Right. Thanks!
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