For this case we have the following vector: v = (- 8, 2) Using product point we have: v.v = (-8, 2). (- 8, 2) v ^ 2 = (-8) * (- 8) + (2) * (2) v ^ 2 = 64 + 4 v ^ 2 = 68 v = root (68) v = root (4 * 17) v = 2 * root (17) Answer: v = 2 * root (17) option c
