document.write( "Question 247271: logbase 2 to the power of x + log base 2 to the the power of (x+4)=5 \n" ); document.write( "

Algebra.Com's Answer #180408 by vleith(2983) $\"\"$ $\"About$

You can put this solution on YOUR website!
$\"log%282%29x+%2B+log%282%29%28x%2B4%29+=+5\"$
\n" ); document.write( " $\"log%282%29%28x%2A%28x%2B4%29%29+=+5\"$
\n" ); document.write( " $\"x%2A%28x%2B4%29+=+2%5E5\"$
\n" ); document.write( " $\"x%5E2+%2B+4x+=+32\"$
\n" ); document.write( " $\"x%5E2+%2B4x+-+32+=+0\"$
\n" ); document.write( " $\"%28x%2B8%29%28x-4%29+=+0\"$
\n" ); document.write( "x = -8 or x=4
\n" ); document.write( "Can't do logs of negatives, so only x=4 works
\n" ); document.write( "Check your answer
\n" ); document.write( " $\"log%282%294+%2B+log%282%29%288%29+=+5\"$
\n" ); document.write( " $\"2+%2B+3+=+5\"$ check! \n" ); document.write( "

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