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OpenStudy (anonymous):
(-9z)^2 and -9z^2 when z =10 (-9z)^ 2 = ? -9z^2 = ?
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OpenStudy (anonymous):
(-9z)^2=81z^2
OpenStudy (anonymous):
\[(-90)² = 8100\]\[-90² = -8100\]
OpenStudy (anonymous):
(-9z)^2=81z^2
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