document.write( "Question 581755: I've forgotten how to solve simple logorithims.. haha\r
\n" ); document.write( "\n" ); document.write( "3. Find all real solutions to the following:
\n" ); document.write( "a) log2(x 􀀀 2) + log2(x + 1) = log2 10 \n" ); document.write( "

Algebra.Com's Answer #371797 by josmiceli(19441) $\"\"$ $\"About$

You can put this solution on YOUR website!
Use the general rule
\n" ); document.write( " $\"+log%28a%29+%2B+log%28b%29+=+log%28a%2Ab%29+\"$
\n" ); document.write( " $\"+log%282%2Cx-2%29+%2B+log%282%2Cx%2B1%29+=+log%282%2C10%29+\"$
\n" ); document.write( " $\"+log%282%2C%28x-2%29%2F%28x%2B1%29%29+=+log%282%2C10%29+\"$
\n" ); document.write( " $\"+%28x-2%29%2F%28x%2B1%29+=+10+\"$
\n" ); document.write( " $\"+x+-+2+=+10%2A%28+x+%2B+1+%29+\"$
\n" ); document.write( " $\"+x+-+2+=+10x+%2B+10+\"$
\n" ); document.write( " $\"+9x+=+-12+\"$
\n" ); document.write( " $\"+x+=+-4%2F3+\"$
\n" ); document.write( "check:
\n" ); document.write( " $\"+log%282%2C%28x-2%29%2F%28x%2B1%29%29+\"$
\n" ); document.write( " $\"+log%282%2C%28-4%2F3+-+2%29%2F%28-4%2F3+%2B+1%29%29+\"$
\n" ); document.write( " $\"+log%282%2C%28-4%2F3+-+6%2F3%29%2F%28-4%2F3+%2B+3%2F3%29%29+\"$
\n" ); document.write( " $\"+log%282%2C%28-10%2F3%29%2F%28-1%2F3%29%29+\"$
\n" ); document.write( " $\"+log%282%2C10%29+\"$
\n" ); document.write( "OK \n" ); document.write( "

\n" );