# Thread: how to solve this cubic equation...

1. ## how to solve this cubic equation...

x^3-x^2+(a-b-b^2)x-ab=0

please guys I need to solve this equation step by step. Thanks

2. are you solving for the variables or are you trying to factor or simplify?

3. Isn't it $x^3-x^2+(a+b-b^2)x-ab=0$?

4. ## How to solev this Cubic Equation

I need to solve this equation step by step by variable x.

x^3-x^2+(A-B-B^2)*x-A*B=0

You can find this equation on:

https://www.e-education.psu.edu/png520/m10_p5.html

5. Originally Posted by chemtoli
I need to solve this equation step by step by variable x.

x^3-x^2+(A-B-B^2)*x-A*B=0

You can find this equation on:

https://www.e-education.psu.edu/png520/m10_p5.html
By inspection x=-B is a root, and then factorisation and the quadratic formula will give the other roots.

CB