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- Aug 9th 2013, 01:44 AM #1

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## Help with Example

- Aug 9th 2013, 02:09 AM #2

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## Re: Help with Example

$\displaystyle \begin{aligned}(2-\lambda)\lambda(1+\lambda)-(1+\lambda)&=(1+\lambda)\left[(2-\lambda)\lambda-1\right]\\&=(1+\lambda)\left(2\lambda-\lambda^2-1\right)\\&=-(1+\lambda)\left(1-2\lambda+\lambda^2\right)\\&=-(1+\lambda)(1-\lambda)^2\end{aligned}$

Ok?