is there any formula or neat trick to factorise a cubic equation like

x^3 + 4x^2 -28x + 32=0?

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- Apr 6th 2010, 04:35 AMTekkenfactorising cubics
is there any formula or neat trick to factorise a cubic equation like

x^3 + 4x^2 -28x + 32=0? - Apr 6th 2010, 05:01 AMProve It
- Apr 6th 2010, 05:11 AMHallsofIvy
That will allow you to find any factors with rational coefficients. More generally, you could use Cardano's cubic formula to find a solution, , then divide by to reduce the problem to factoring a quadratic.