Question

What polynomial has roots of –5, –4, and 1 ?
I must be doing these wrong, because everytime I am getting a different sign.
It's (x-5)(x-4)(x+1), right?! What polynomial has roots of –5, –4, and 1 ?
I must be doing these wrong, because everytime I am getting a different sign.
It's (x-5)(x-4)(x+1), right?! @Mathematics

Answer 1

Possible answers
x3 – 8x2 – 11x + 20

x3 – x2 + 22x + 40

x3 + x2 – 22x – 40

x3 + 8x2 + 11x – 20

Answer 2

(x-5)(x-4)(x+1) has roots at x = POSITIVE five, POSITIVE four, and NEGATIVE one.

A root is where the stuff in the parenthesis equals zero.

(x-5) has root at positive five cuz... ( (+5) - 5) = 0

Answer 3

Check out the graph. By the way, the program I used here is free and works on all operating systems. Geogebra: http://www.geogebra.org/cms/en/installers

Answer 4

I use geogebra already <3