# Can you solve this linear algebra problem?

Prove that if u and v are vectors in R^n...

then ...

llu+vll^2 + llu-vll^2 = 2 llull^2 + 2 llvll^2

then ...

llu+vll^2 + llu-vll^2 = 2 llull^2 + 2 llvll^2

Update:
This isn't homework, I'm not stupid... I know the answer, I'm posting the question to see if anyone else did... and obviously no one does...

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