Erasing x^2 in a cubic equation.

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- Oct 6th 2008, 06:58 AMardameasy and quick one
Erasing x^2 in a cubic equation.

- Oct 6th 2008, 09:07 AMLaurent
Try to find $\displaystyle a$ such that, if you replace $\displaystyle x$ by $\displaystyle y-a$ and expand, the coefficient in front of $\displaystyle y^2$ is zero.

- Oct 6th 2008, 10:34 AMThePerfectHacker
- Oct 6th 2008, 10:42 AMardam
cheers for the help