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How to factorise an x^3

Mhatton25

How do I factorise x^3 - 6x^2 11x - 6 and where does it cross the x axis?????

(edited 5 years ago)

Reply 1

username4167452

Original post by Mhatton25

How do I factorise x^3 - 6x + 11x - 6 and where does it cross the x axis?????

use the factor theorem to find one of the roots and then divide your x^3 expression by this factor using long division to find the other roots (if there are any other real ones)

Reply 2

3121

Have you not done polynomial division?

Don’t get distracted, I know it’s easy to.

To find your first factor you sub in random numbers till you get 0

(edited 5 years ago)

Reply 3

Mhatton25

No I haven’t, no idea what to do

Reply 4

3121

Original post by Mhatton25

No I haven’t, no idea what to do

Watch the video I sent and find the first root by substitution, if you get stuck share your working (as a photo ideally) and someone (or me!) will help :smile: