please explain or no credit and please wrie exact answers no

please explain or no credit, and please wrie exact answers, no decimals!

Consider the points P(1,3,2) and Q(3,9,8) a. Find PQ and state your answer in two forms: Ka, b, c) and ai bj ck. b. Find the magnitude of PQ. c. Find two unit vectors parallel to PQ a. Find PQ. b. Find the magnitude of PQ. The magnitude of PQ is (Type an exact answer, using radicals as needed.) c. Find two unit vectors parallel to PQ. The unit vector in the direction of PQ is K (Type exact answers, using radicals as needed.)

Solution

a)<2,6,6> = 2i + 6j +6k b) sqrt(76) c)+(2i+6j+6k)/sqrt(76) -(2i+6j+6k)/sqrt(76)