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OpenStudy (anonymous):
Evaluate the expression below when x = 9. 3x + 2x2 - 9
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OpenStudy (anonymous):
Is the 2x2 signifying 2(x)2 or 2x squared?
OpenStudy (anonymous):
just plug in 9 everywhere you see x.
OpenStudy (rajee_sam):
27 + 162 - 9 =180
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