Problem

Determine whether triangle ABC is scalene, isosceles, or equilateral: a. <b>a</b> A is (2, 1, -3), B is (-5, 5, 3), and C is (-2, 3, 6) b. <b>b</b> A is (3, -1, 5), B is (-1, -4, 0), and C is (2, 7, -3)

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