Si α₁ - Calcule: ية • 14 -4 4 " . وة = 2)a₂ a1 + 3 • α₁ 3)α1 • α₂ 4)ã1 (a2 + a3) 5) (a₁a2) (azã4) H -4 āz = , ã4 = -2 4

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