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## Homework Statement

I'm really at a loss here, if anyone could help me out I'd really appreciate it.

Given 'a' and 'b' unit vectors,

if |a+b| = root3, determine (2a-5b)dot(b+3a)

Given 'a' and 'b' unit vectors,

if |a+b| = root3, determine (2a-5b)dot(b+3a)