physics
posted by johnny .
Three vectors are given by = 4.5 + 2.5  2.0, = 1.0  4.0 + 5.0, and = 2.0 + 2.0 + 1.0. Find the following.
(a) a · (b*c )
(b) a· (b+c)
(c) a x( a+b)

I will be happy to critique your thinking.
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