Question 143368
Evaluate {{{P(-1/2)}}} if  {{{P(x) = 2x^4 + x^3 + 12}}}

just plug in {{{x= -(1/2)}}}

{{{P(-1/2) = 2(-1/2)^4 + (-1/2)^3 + 12}}}

{{{P(-1/2) = 2((-1)^4/2^4) + ((-1)^3/2^3) + 12}}}

{{{P(-1/2) = cross(2)(1/cross(16)8) -1/8 + 12}}}

{{{P(-1/2) = cross((1/8)) -cross(1/8) + 12}}}

{{{P(-1/2) = 12}}}