document.write( "Question 933171: 3^x-14(3^-x)=5, help me please to find exact solution \n" ); document.write( "
Algebra.Com's Answer #566657 by Alan3354(69443)\"\" \"About 
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Multiply by 3^x
\n" ); document.write( "Then sub u for 3^x --> a quadratic in u.
\n" ); document.write( "Solve for u, sub back.
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