import re, math

class SquareEquationException(Exception):
    pass

def solve_square_equation(eq):
    eq = eq.lower().lstrip().rstrip().replace(' ', '')
    eqreg = re.findall('(?:[-+]{0,1}[0-9]{0,100}x[\^]2|[-+]{1}[0-9]{0,100}x|[-+]{0,1}[0-9]{1,100})', eq)
    try:
        for i in eqreg:
            if '^' in i:
                if (i[0] == '+' or i[0] == '-') and i[1] == 'x':
                    a = int('%s1' % i[0])
                elif i[0] == 'x':
                    a = 1
                else:
                    a = int(i.split('x')[0])
            elif 'x' in i:
                b = int(i.split('x')[0])
            else:
                c = int(i)
        D = b * b - 4 * a * c
        print('a = %d\nb = %d\nc = %d\nD = %d'% (a,b,c,D))
        if D < 0:
            raise SquareEquationException
        if D > 0:
            x1 = int((-b + math.sqrt(D)) / 2 * a)
            x2 = int((-b - math.sqrt(D)) / 2 * a)
            roots = [x1, x2]
            roots.sort()
            print('x1, x2 =',roots)
        if D == 0:
            x = int((-b + math.sqrt(D)) / 2 * a)
            print('x = [',x,']')
    except Exception as ERR:
        print(ERR)
        raise SquareEquationException

eq = input()
print(eq,'= 0')
solve_square_equation(eq)