Question

For the polynomial function, find f (-1) and f (2)
f (x) = -x2 + 5 x3 - 6
f (-1) = ?
f (2) = ?

Answer 1

So, all you have to do substitute the value in for x and evaluate.
So, if your equations is f(x)= -x(2) + 5(3x) -6. Then f (-1) = −19
f (2) = 20
Hope I helped! :)