document.write( "Question 146614: The book gives an example of a function for X that substituts 1/2 for X in the expression....\r
\n" ); document.write( "\n" ); document.write( "f(1/2)=(1/2)^3 - 3(1/2)^2 + (1/2) + 5\r
\n" ); document.write( "\n" ); document.write( "=1/8 - 3(1/4) + 1/2 + 5\r
\n" ); document.write( "\n" ); document.write( "=1/8 - 3/4 + 1/2 +5\r
\n" ); document.write( "\n" ); document.write( "=1/8 - 6/8 +4/8 + 40/8\r
\n" ); document.write( "\n" ); document.write( "= 39/8\r
\n" ); document.write( "\n" ); document.write( "Now im sure this is just simple addition and subtraction with fractions, but I haven't worked with math in many years. \r
\n" ); document.write( "\n" ); document.write( "Can someone break down\r
\n" ); document.write( "\n" ); document.write( "f(X) = 2X^3 - X^2 + 3X - 2\r
\n" ); document.write( "\n" ); document.write( "with f(-1/2) substuting for X please, the more info the better.
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Algebra.Com's Answer #107059 by Fombitz(32388)\"\" \"About 
You can put this solution on YOUR website!
\"f%28x%29+=+2x%5E3-x%5E2+%2B+3x-2\"
\n" ); document.write( "\"f%28-1%2F2%29+=+2%28-1%2F2%29%5E3-%28-1%2F2%29%5E2+%2B+3%28-1%2F2%29-2\"
\n" ); document.write( "\"f%28-1%2F2%29+=+2%28-1%2F8%29-%281%2F4%29+-+%283%2F2%29-2\"
\n" ); document.write( "To add and subtract fractions, you need to have a common denominator.
\n" ); document.write( "Change all fraction to common denominator of 8.
\n" ); document.write( "\"1%2F4=2%2F8\"
\n" ); document.write( "\"3%2F2=12%2F8\"
\n" ); document.write( "\"2=16%2F8\"
\n" ); document.write( "\"f%28-1%2F2%29+=+2%28-1%2F8%29-%281%2F4%29+-+%283%2F2%29-2\"
\n" ); document.write( "\"f%28-1%2F2%29+=+%28-2%2F8%29-%282%2F8%29+-+%2812%2F8%29-16%2F8\"
\n" ); document.write( "\"f%28-1%2F2%29+=+%28-2-2-12-16%29%2F8\"
\n" ); document.write( "\"f%28-1%2F2%29+=+%28-32%29%2F8\"
\n" ); document.write( "\"f%28-1%2F2%29+=+-4\"
\n" ); document.write( "
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