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OpenStudy (anonymous):
solve for p 64p^2-81=0
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OpenStudy (anonymous):
\[64p^2-81=(8p+9)(8p-9)=0\] so, \[p=\pm \frac{9}{8}\]
OpenStudy (anonymous):
(8p+9)(8p-9)=0 p=-9/8 p=9/8
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