Zadachi - Po Matematika

a) (AB = _____) b) (\sin A = _____) Problem 5 (Number Theory) Find all integers (n) such that (n^2 - 3n + 2) is divisible by (4).

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(_____) Problem 3 (Linear System) Solve the system: [ \begincases 2x + y = 7 \ x - 2y = -4 \endcases ] a) (AB = _____) b) (\sin A =