Question: Answer please #1. If A( -2, 1. -2) and B(-5, 4, 9) are two points in R', determine the following: a) AB and BA .

Answer please #1. If A( -2, 1. -2) and B(-5, 4,

Answer please

#1. If A( -2, 1. -2) and B(-5, 4, 9) are two points in R', determine the following: a) AB and BA . Express answer in simplified radicals. b) The coordinates of a unit vector in the same direction as AB

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