Hi guys,(adsbygoogle = window.adsbygoogle || []).push({});

Need some help on something I didn't know I didn't know.

How do you factorize this?

-λ^{3}+7λ+6=0

I assumed this?

-λ(λ^{2}-7) + 6 = 0

λ = 6

λ = ±√7

But that's wrong as the answers in the book are -2, -1, and 3.

Can someone give me a little guidance on this, I have only ever done factorization where one of them is already know.

Kind Regards

Rob K

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# Homework Help: Hi guys, Need some help on something I didn't know I didn't

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