Question

Given f(x)=4x^3+2x^2+x-7
f(-1/2)

Please help

Answer 1

just substitute x = -1/2 into the polynomial and calculate and answer...

\[P(\frac{-1}{2}) = 4 \times (\frac{-1}{2})^3 + 2 \times (\frac{-1}{2})^2 + (\frac{-1}{2}) - 7\]

Answer 2

I tried doing that but I mixed up my calculations along the way.

Answer 3

I think I multiplied wrong.

Answer 4

I'm not very good with fractions.

Answer 5

well just type it into the calculator the way I've written it using brackets... I think the answer will be negative.

Answer 6

Oh okay I'll try. Thanks.