document.write( "Question 1060994: I'm not sure how to set up this problem.\r
\n" ); document.write( "\n" ); document.write( "a) Evaluate the expression in part (a) without using a calculator.\r
\n" ); document.write( "\n" ); document.write( "a) Use your result from part (a) to write the expression in part (b) as a single logarithm whose coefficient is 1.\r
\n" ); document.write( "\n" ); document.write( "91.) a) (log25)5
\n" ); document.write( " -For this I got 1/2
\n" ); document.write( "which is correct.\r
\n" ); document.write( "\n" ); document.write( "b.) (log25)x + (log25)(x^2-1) - (log25)(x+1) - 1/2\r
\n" ); document.write( "\n" ); document.write( "Really not sure what to do here.
\n" ); document.write( "But the answer in the book is two equivalent logarithmic expressions (separated by an equal sign.)
\n" ); document.write( "

Algebra.Com's Answer #675828 by josmiceli(19441)\"\" \"About 
You can put this solution on YOUR website!
Here's the trick:
\n" ); document.write( "You already said \"+log%28+25%2C5+%29+=+1%2F2+\"
\n" ); document.write( "Take the reverse of this and plug it into
\n" ); document.write( "your 2nd equation:
\n" ); document.write( "\"+log%28+25%2Cx+%29+%2B+log%28+25%2C%28+x%5E2+-+1+%29+%29+-+log%28+25%2C+x%2B1+%29+-+1%2F2+\"
\n" ); document.write( "
\n" ); document.write( "Now use the rules:
\n" ); document.write( "\"+log%28+a%2Cb+%29+%2B+log%28+a%2Cc+%29+=+log%28+a%2C+b%2Ac+%29+\"
\n" ); document.write( "\"+log%28+a%2Cb+%29+-+log%28+a%2Cc+%29+=+log%28+a%2C+b%2Fc+%29+\"
\n" ); document.write( "---------------------------------------
\n" ); document.write( "\"+log%28+25%2C+%28+x%5E2+-+1+%29+%2F+%28+x%2B1+%29+%29+%2B+log%28+25%2C+x%2F5+%29+\"
\n" ); document.write( "\"+log%28+25%2C+x+-+1+%29+%2B+log%28+25%2C+x%2F5+%29+\"
\n" ); document.write( "\"+log%28+25%2C+%28+x%5E2+-+x+%29%2F5+%29+\"
\n" ); document.write( "--------------------------------
\n" ); document.write( "check the answer:
\n" ); document.write( "In the original equation, I'll say \"+x+=+24+\",
\n" ); document.write( "because numbers work out good
\n" ); document.write( "-----------------------------------------
\n" ); document.write( "\"+log%28+25%2Cx+%29+%2B+log%28+25%2C%28+x%5E2+-+1+%29+%29+-+log%28+25%2C+x%2B1+%29+-+1%2F2+\"
\n" ); document.write( "
\n" ); document.write( "\"+log%28+25%2C24+%29+%2B+log%28+25%2C+23%2A25+%29++-+1+-+1%2F2+\"
\n" ); document.write( "\"+log%28+25%2C24+%29+%2B+1+%2B+log%28+25%2C23+%29+-+3%2F2+\"
\n" ); document.write( "\"+log%28+25%2C+%2823%2A24%29+%29+-+1%2F2+\"
\n" ); document.write( "\"+log%28+25%2C+%28552%29+%29+-+1%2F2+\"
\n" ); document.write( "It can also be:
\n" ); document.write( "\"+log%28+25%2C+552%2F5+%29+\"
\n" ); document.write( "--------------------------
\n" ); document.write( "Now I'll check the answer:
\n" ); document.write( "\"+log%28+25%2C+%28+x%5E2+-+x+%29%2F5+%29+\"
\n" ); document.write( "\"+log%28+25%2C+%28+24%5E2+-+24+%29%2F5+%29+\"
\n" ); document.write( "\"+log%28+25%2C+%28+576+-+24+%29%29+-+1%2F2+\"
\n" ); document.write( "\"+log%28+25%2C+%28552%29+%29+-+1%2F2+\"
\n" ); document.write( "OK
\n" ); document.write( "Hope I got it!\r
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