document.write( "Question 905711: for F(x) = 3x to the 2 power, find F(x+h)-f(x)
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Algebra.Com's Answer #549331 by nerdybill(7384)![]() ![]() You can put this solution on YOUR website! for F(x) = 3x to the 2 power, \n" ); document.write( "find [F(x+h)-f(x)]/h \n" ); document.write( ". \n" ); document.write( "f(x) = 3x^2 (given) \n" ); document.write( ". \n" ); document.write( "f(x+h) = 3(x+h)^2 \n" ); document.write( "f(x+h) = 3(x+h)(x+h) \n" ); document.write( "f(x+h) = 3(x^2+2hx+h^2) \n" ); document.write( "f(x+h) = 3x^2+6hx+3h^2 \n" ); document.write( ". \n" ); document.write( "so, we substitute the above into: \n" ); document.write( "[F(x+h)-f(x)]/h \n" ); document.write( ". \n" ); document.write( "[3x^2+6hx+3h^2 - 3x^2]/h \n" ); document.write( "[6hx+3h^2]/h \n" ); document.write( "6x+3h (this is what they're looking for)\r \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |