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.

Answer 1

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

Answer 2

What to google for ?

Answer 3

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

Answer 4

Sorry I have made an error!

Answer 5

You meant -2x right ?

Answer 6

Then what I am looking for is Ruffini rule :D

Answer 7

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