Erasing x^2 in a cubic equation.

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- Oct 6th 2008, 07:58 AMardameasy and quick one
Erasing x^2 in a cubic equation.

- Oct 6th 2008, 10:07 AMLaurent
Try to find such that, if you replace by and expand, the coefficient in front of is zero.

- Oct 6th 2008, 11:34 AMThePerfectHacker
- Oct 6th 2008, 11:42 AMardam
cheers for the help