document.write( "Question 945331: $\"+log3+%28x-9%29+%2B+log3+%28x-3%29=2+\"$ \n" ); document.write( "

Algebra.Com's Answer #576498 by lwsshak3(11628) $\"\"$ $\"About$

You can put this solution on YOUR website!
solve for x
\n" ); document.write( " $\"+log3+%28x-9%29+%2B+log3+%28x-3%29=2+\"$
\n" ); document.write( " $\"+log%283%2C%28%28x-9%29%28x-3%29%29%29=2\"$
\n" ); document.write( "3^2=(x-9)(x+3)
\n" ); document.write( "9=x^2-6x-27
\n" ); document.write( "x^2-6x-36=0
\n" ); document.write( "solve by quadratic formula:
\n" ); document.write( " $\"x+=+%28-b+%2B-+sqrt%28+b%5E2-4%2Aa%2Ac+%29%29%2F%282%2Aa%29+\"$
\n" ); document.write( "a=1, b=-6, c=-36
\n" ); document.write( "ans:
\n" ); document.write( "x=-3.7 (reject)
\n" ); document.write( "or
\n" ); document.write( "x=9.7 \n" ); document.write( "

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