Question

Please help

What are all the real and complex roots of the polynomial x^3 − 5x^2 − x + 5, given that one root is x = -1

Answer 1

You have to divide polynom with x+1.
Them you get a polynome of second degree

Answer 2

@Gebooors I need help with that

Answer 3

Start from this:

x + 1 | x^3 - 5x ^2 - x + 5

Answer 4

X^2
x + 1 | x3 - 5x2 - x + 5

You Multiply X+1 with x^2 you get x^3 + x^2

You put it below. X3 -5x2 and subtract

Answer 5

Sorry, you get x^3 + 5x^2

Answer 6

It is difficult to write here, but you eliminate always termiä of highest
Degree.