document.write( "Question 1086904: Evaluate [f(x+h)-f(x)]/h and simplify if f(x)=2x^2 + x + 1 \n" ); document.write( "

Algebra.Com's Answer #701169 by Boreal(15235) $\"\"$ $\"About$

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f(x+h)=2(x+h)^2 +(x+h)+1=2x^2+4xh+2h^2+x+h+1
\n" ); document.write( "subtract from that---- -2x^2---------x---1
\n" ); document.write( "That is 4xh+2h^2+h
\n" ); document.write( "divide that by h
\n" ); document.write( "That is 4x+2h+1
\n" ); document.write( "(as h approaches 0, the expression approaches 4x+1.) \n" ); document.write( "

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