Question

How do you use synthetic division to find P(2) and P(-1)?

P(x) = x^5 - 4x^3 + 2x

Answer 1

to be honest i dont know what synthetic division is

Answer 2

I have this so far, but I can't remember how to find P(-1)
2 | 1 0 -4 0 2 0
........2 4 0 0 4
_____________
....1 2 0 0 2 | 4
So, P(2) = 4