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If vecu=veca-vecb, vecv=veca+vecb and |v...

If `vecu=veca-vecb`, `vecv=veca+vecb` and `|veca|=|vecb|=2`, then `|vecuxxvecv|` is equal to

A

`2sqrt(16-(veca.vecb)^(2))`

B

`sqrt([16-(veca.vecb)^(2)])`

C

`2sqrt([4-(veca.vecb)^(2)])`

D

`[4-(veca.vecb)^(2)]`

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