x^2 + 2x - 15 = 0
开发一个程序来解决这个方程
def solve_equation(a, b, c):
    判别式 = (b**2) - (4*a*c)
    x1 = (-b + (判别式**(1/2))) / (2*a)
    x2 = (-b - (判别式**(1/2))) / (2*a)
    return x1, x2

print(solve_equation(1, 2, -15))