Question

PLEASE HELP!!!!!!!!!!!!!! WILL MARK BRAINLIEST!!!!!!!!!!!!!!!!!!!!!!!

Use your answer to the previous problem to identify the roots of r(x). List the roots in order from least to greatest. What are the roots of r(x)?
r(x)=(x^2+x−12)(2x+1)

Enter your answer as a number (if there is only one root) or a list of numbers (if there are multiple roots), like this: 42 or like this: 42, 53, 64.

Answer 1

Answer:

(3);  (-1/2);  (-4)

Step-by-step explanation:

First, you should convert the equation into cubic form.

r(x)=(x^2+x−12)(2x+1)

2x^3  +3 x^2 − 23x− 12=0

Next, use the rational roots test to find the first root.

(-1/2)

Using the factor theorem you can find the other roots.

(3)    (-4)