python的学校疑问难题求解

a, b, c =map(float, input(">>>").split(" "))delta = pow(b, 2) - 4 * a * cres1 = (-b + pow(delta, 0.5)) / (2 * a)res2 = (-b - pow(delta, 0.5)) / (2 * a)print(delta)if delta < 0 : print('No')else: print("{:.2f} {:.2f}".format(max(res1, res2), min(res1, res2)))