document.write( "Question 47490: log2 18+log2 x-log2 3
\n" ); document.write( "the twos are lowercase i am having a hard time doing these problems.\r
\n" ); document.write( "\n" ); document.write( "log2 x+log2(x+3)-log2x^2\r
\n" ); document.write( "\n" ); document.write( "solve x: -5=log2x\r
\n" ); document.write( "\n" ); document.write( "e^5x+1=40 solve\r
\n" ); document.write( "\n" ); document.write( "7log+log2 32\r
\n" ); document.write( "\n" ); document.write( "if f(x)=log2x find f(16)\r
\n" ); document.write( "\n" ); document.write( "I have over a hundred problems like these for an exam if i can get someone to show me how to do this by monday will be great\r
\n" ); document.write( "\n" ); document.write( "thank you
\n" ); document.write( "

Algebra.Com's Answer #31347 by stanbon(75887)\"\" \"About 
You can put this solution on YOUR website!

\n" ); document.write( "log2 x+log2(x+3)-log2x^2
\n" ); document.write( "Using the log laws you can rewrite this expression as:
\n" ); document.write( "log[x*(x+3)/x^2
\n" ); document.write( "=log2 [(x^2+3x)/x^2]
\n" ); document.write( "---------------------------
\n" ); document.write( "solve x: -5=log2x
\n" ); document.write( "2^(-5)=x
\n" ); document.write( "x=1/32
\n" ); document.write( "----------------------------
\n" ); document.write( "
\n" ); document.write( "e^5x+1=40 solve
\n" ); document.write( "e^(5x+1)=40
\n" ); document.write( "Take the natural log of both sides to get:
\n" ); document.write( "5x+1 = ln40
\n" ); document.write( "5x+1 = 3.68887945...
\n" ); document.write( "5x=2.68887945...
\n" ); document.write( "x=0.53777589...
\n" ); document.write( "----------------------------
\n" ); document.write( "7log+log2 32
\n" ); document.write( "This problem is garbled
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\n" ); document.write( "if f(x)=log2x find f(16)
\n" ); document.write( "f(16)=log2 16 = 4
\n" ); document.write( "-----------------------
\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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