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3 + 5 = 8\n+ 7 + 10 = 93\n- 20 + 2 = - 18\n- 2 - 5 = - 7\n- 8 + 3 = - 5\n- 1 - 2 = - 3\n+ 1 + 7 = 3\n- 1 - 1 + 1 = - 20\n12 x -2 = - 20\n- 5 x -3 = + 15\n- 8 x 2 = - 16\n - 0 x α = 0\n10 : -5 = - 2\n\nQ = conjunto dos Números Racionais\nQp : frações\nQp: decimais\na^n = a.a.a...a\n2^3 = 2.2.2 = 8\n- 2^2 = - 4\n(- 2)^2 = - 2.- 2 = + 4\n(- 5)^2 = (- 5).(- 5) = + 25\n- (- 3) = (- 2).(- 2).(- 2) = 8\n Q = 16 = 4 =\n16 = 2^2.2^2\n2^2.2^2.2^2 = 2^4\nQ = raíz quadrada\n√16 ->\n9\n3^{2} = 3\n√17 -> 18\n√2 × 8 → 2.2^{-2 .3^{2}}\n3 .1/2