document.write( "Question 994056: Find the difference quotient and simplify for the following function: f(x)=-10x^2 + 10x +8. Thanks for your help. \n" ); document.write( "
Algebra.Com's Answer #613330 by josgarithmetic(39617)\"\" \"About 
You can put this solution on YOUR website!
h, some small quantity which can be made as small as you wish be never being 0.\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "\"f%28x%2Bh%29=-10%28x%2Bh%29%5E2%2B10%28x%2Bh%29%2B8\"
\n" ); document.write( "\"-10%28x%5E2%2B2hx%2Bh%5E2%29%2B10x%2B10h%2B8\"
\n" ); document.write( "\"-10x%5E2-20hx-10h%5E2%2B10x%2B10h%2B8\"\r
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "Difference Quotient is
\n" ); document.write( "\"%28f%28x%2Bh%29-f%28x%29%29%2Fh\"\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "\"%28%28-10x%5E2-20hx-10h%5E2%2B10x%2B10h%2B8%29-%28-10x%5E2+%2B+10x+%2B8%29%29%2Fh\"\r
\n" ); document.write( "\n" ); document.write( "\"%28-10x%5E2-20hx-10h%5E2%2B10x%2B10h%2B8%2B10x%5E2-10x-8%29%2Fh\", look at the terms in the numerator carefully....\r
\n" ); document.write( "\n" ); document.write( "\"%28-20hx-10h%5E2%2B10h%29%2Fh\"\r
\n" ); document.write( "\n" ); document.write( "\"highlight%28-20x-10h%2B10%29\"
\n" ); document.write( "You might then ask, \"what happens as h approaches 0?\"
\n" ); document.write( "
\n" );