document.write( "Question 87655: If log (p+q) = log p- log q, show that p(1-q)=q^2 \n" ); document.write( "
Algebra.Com's Answer #63568 by rapaljer(4671)\"\" \"About 
You can put this solution on YOUR website!
Remember the law of logarithms: \"log+%28p%2Fq%29+=+log+p+-+log+q+\".\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "Therefore, if you are given that \"log+%28%28p%2Bq%29%29+=+log+p-+log+q\",\r
\n" ); document.write( "\n" ); document.write( "then replace the right side as follows:\"log+%28%28p%2Bq%29%29+=+log%28p%2Fq%29+\"\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "Take the antilog of each side and it looks like this: \"%28p%2Bq%29+=+%28p%2Fq%29\"\r
\n" ); document.write( "\n" ); document.write( "Muliply both sides by q: \"q%28p%2Bq%29+=+p\"
\n" ); document.write( "\"pq%2B+q%5E2+=+p+\"\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "Subtract pq from each side:
\n" ); document.write( "\"q%5E2+=+p-pq+\"\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "Factor the right side:
\n" ); document.write( "\"q%5E2+=+p%281-q%29+\"\r
\n" ); document.write( "\n" ); document.write( "\"p%281-q%29=q%5E2\"\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "R^2 Retired from SCC
\n" ); document.write( "
\n" ); document.write( "
\n" );