Question 1100069
YOU can do this.


{{{f(x)=-5x^2+2x+8}}}


Some variable, h;
{{{f(x+h)=-5(x+h)^2+2(x+h)+8}}}


Difference Quotient:  {{{(f(x+h)-f(x))/h}}}


Substituting the expressions: {{{(-5(x+h)^2+2(x+h)+8-(-5x^2+2x+8))/h}}}


SIMPLIFY THE EXPRESSION.