How can I put put this equation
x^3+x^2-x+15 = 0
One of this equation answers is -3
So i wanna turn it into something like this
(x+3)*Z
X is the rest of the equation.

If it's not clear , just tell me.

Question

How can I put put this equation 
x^3+x^2-x+15 = 0
One of this equation answers is -3
So i wanna turn it into something like this
(x+3)*Z
X is the rest of the equation.

If it's not clear , just tell me.

anonymous · Answer

Dude, you can just Google that. You'll find answers how to do it.

trojanpoem · Answer

What to google for ?

michele_laino · Answer

Applying the Ruffini rule you get:
$$x ^{3}-x ^{2}+x+15=(x+3)*(x ^{2}-4x+5)$$

michele_laino · Answer

Sorry I have made an error!

trojanpoem · Answer

You meant -2x right ?

trojanpoem · Answer

Then what I am looking for is Ruffini rule :D

michele_laino · Answer

Applying the Ruffini rule, I get:
$$x ^{3}+x ^{2}-x+15=(x+3)*(x ^{2}-2x+5)$$