How do you expand and simplify this one?(adsbygoogle = window.adsbygoogle || []).push({});

(2u+v).(u-2v)

=2u.u+2u.(-2v)+v.u+v.(-2v)

Where u and v are vectors and the "." is the dot. I did some but after this im lost, how can I continue?

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# Homework Help: Dot product

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