Question

Use the following equation: f(x) = x3 – 2x2 – 2x + 1

According to the Rational Root Theorem, which of the following would be a factor of the function?


Select one:


a. x – 1

b. x + 1

c. x2 – 1

d. x2 + 1

@Miracrown

Answer 1

This is the last one I'm going to help you with, the rest you'll have to do by yourself. Fair enough?

Answer 2

Which one do you think is the correct answer?

Answer 3

Im not sure which one on this one

Answer 4

well you've gotta learn to do things by yourself or you'll never succeed. :)

Answer 5

you can't always rely on others to do things for you, you know?

Answer 6

I have an A in math its just that this has been giving me troubles

Answer 7

d I know im srry its fair :)

Answer 8

learn to develop some independency when doing such questions.

Answer 9

So... the rational root theorem states that if the leading coefficient and the constant term are non-zero. In this case, 1 and 1. Then each rational root x, when written in lowest terms p/q, then p is an integer factor of the constant term, in this case 1. And q is an integer factor on the leading c

oefficient, in this case 1 again.
So this means, the rational root is 1 or -1
So we must be able to discount either -1 or 1

Answer 10

the root is -1
so the answer must be b
so there's no a prior reason I think that you can say it's +1 or -1
you just have to check like I did

Answer 11

looking at an example.. that seems to be the case yes, So you get possibilities for the rational roots but with an ambiguity up to sign

Answer 12

thanks

Answer 13

yw