import math
a = float(input('a'))
b = float(input('b'))
c = float(input('c'))
if not isinstance (a, (int, float)):
raise TypeError('bad operand type')
if not isinstance (b, (int, float)):
raise TypeError('bad operand type')
if not isinstance (c, (int, float)):
raise TypeError('bad operand type')
if a == 0:
print('a=0:',-(c/b))
else:
if (b*b)-(4*a*c) > 0:
print('one:',(-b + math.sqrt((b*b)-(4*a*c)))/(2*a))
print('tow:',(-b - math.sqrt((b*b)-(4*a*c)))/(2*a))
print('math.sqrt=',math.sqrt((b*b)-(4*a*c)))
else:
print('no jie')
diska本尊