Better Students Ask More Questions.
Factor the polynomial to determine the x intercepts. y = -x^3 - 2x^2 + 9x + 18
1 Answer | add yours
`y = -x^3 - 2x^2 + 9x + 18`
Factorizing the polynomial yields,
For obtaining x-intecepts, put y=0
This leads to three solutions for x.
`(x+2)=0 rArr x=-2`
`(3-x)=0 rArr x=3`
`(3+x)=0 rArr x=-3`
Therefore, the x-intercepts of the given polynomial are
-3, -2 and 3.
Posted by llltkl on July 21, 2013 at 4:04 PM (Answer #1)
Join to answer this question
Join a community of thousands of dedicated teachers and students.