Question 1180501

If {{{f(x)=2x^2-x-3 }}}and {{{g(x)=2x-6}}}

then

{{{ (g-f)(x)=2x-6-(2x^2-x-3)}}}

{{{ (g-f)(x)=2x-6-2x^2+x+3}}}

{{{ (g-f)(x)=-2x^2+2x+x+3-6}}}

{{{ (g-f)(x)=-2x^2+3x-3}}}

now find
{{{ (g-f)(-2)}}}

{{{ (g-f)(-2)=-2(-2)^2+3(-2)-3}}}

{{{ (g-f)(-2)=-2*4-6-3}}}

{{{ (g-f)(-2)=-17}}}