- #1

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## Homework Statement

Prove ||

*u+v*||^2 + ||

*u-v*||^2=2||

*u*||^2+2||

*v*||^2

## Homework Equations

* This is the part I can't figure out*

## The Attempt at a Solution

anybody got an idea where I can start? I can't seem to remember the property I can use to simplify ||u+v||^2

P.S sorry for the vague title, i really didn't know what to put in there.

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