Question

Identify the polynomial functions that has zeros at 1,-1 and 2.

Answer 1

Answer:

$y=x^{3} -2x^{2} -x+2$

Step-by-step explanation:

You are given the roots 1, -1, and 2.

From there, you can combine all these factors into:

(x-1)(x+1)(x-2)

You know this because if you set these factors to 0, it will give you the roots 1, -1, and 2.

You can find the answer by multiplying all the factors and you get:

$x^{3} -2x^{2} -x+2$

Hope I helped :)