1) $$|\vec{AB}| = \sqrt{(2-5)^2 + (1-(-3))^2} = \sqrt{(-3)^2 + 4^2} = \sqrt{9 + 16} = \sqrt{25} = 5$$
2) $$|\vec{AM}| = \sqrt{(5-5)^2 + (3-(-3))^2} = \sqrt{0^2 + 6^2} = \sqrt{0 + 36} = \sqrt{36} = 6$$
Ответ: |AB| = 5; |AM| = 6.