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OpenStudy (anonymous):
3^(2x) - 5(3^x) = -6
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OpenStudy (anonymous):
\[3^{2x} - 5 ( 3^{x}) = -6\]
myininaya (myininaya):
try to let u=3^x so u^2=3^(2x) so try replace 3^x with u and 3^(2x) with u^2
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