Question 24863
Did you mean:

{{{f(x)=2x^2+(1/2)x-4}}}?

{{{f(-1/2) = 2*(-1/2)^2 + (1/2)*(-1/2) -4}}}
{{{ f(-1/2) = 2*(1/4) - 1/4 - 4}}}

{{{f(-1/2) = 2/4 - 1/4 - 16/4 = -15/4}}}


R^2 at SCC