def _nth_root1(p, n, x, prec):
    """
    Univariate series expansion of the nth root of ``p``.

    The Newton method is used.
    """
    if rs_is_puiseux(p, x):
        return rs_puiseux2(_nth_root1, p, n, x, prec)
    R = p.ring
    zm = R.zero_monom
    if zm not in p:
        raise NotImplementedError('No constant term in series')
    n = as_int(n)
    assert p[zm] == 1
    p1 = R(1)
    if p == 1:
        return p
    if n == 0:
        return R(1)
    if n == 1:
        return p
    if n < 0:
        n = -n
        sign = 1
    else:
        sign = 0
    for precx in _giant_steps(prec):
        tmp = rs_pow(p1, n + 1, x, precx)
        tmp = rs_mul(tmp, p, x, precx)
        p1 += n/p1 - tmp/n
    if sign:
        return p1
    else:
        return _series_inversion1(p1, x, prec)
dataset/ETHPy150Open sympy/sympy/sympy/polys/ring_series.py/_nth_root1/swapped operands of `/`