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这题是7-4
2019-06-09
源自：初识Python 7-4
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import mathdef quadratic_equation(a, b, c): t = math.sqrt(b * b - 4 * a * c) return (-b + t) / (2 * a),( -b - t )/ (2 * a)print quadratic_equation(2, 3, 0)print quadratic_equation(1, -6, 5)
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