document.write( "Question 247161: Solve. log2(x^2-1)=3 \n" ); document.write( "

Algebra.Com's Answer #180348 by stanbon(75887) $\"\"$ $\"About$

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Solve. log2(x^2-1)=3
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\n" ); document.write( "Convert to exponential form:
\n" ); document.write( "(x^2-1) = 2^3
\n" ); document.write( "x^2-1= 8
\n" ); document.write( "x^2-9 = 0
\n" ); document.write( "Factor:
\n" ); document.write( "(x-3)(x+3) = 0
\n" ); document.write( "x = 3 or x = -3
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H. \n" ); document.write( "

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