code: public static BigDecimal root(BigDecimal x, BigDecimal n) {
          return BigDecimalMath.root(x, n, defaultMathContext);
      }
docs: Calculates the n'th root of {@link BigDecimal} x using the default {@link MathContext}.
  
  @param x the {@link BigDecimal} value to calculate the n'th root
  @param n the {@link BigDecimal} defining the root
  
  @return the calculated n'th root of x with the precision specified in the default {@link MathContext}
  @see #setDefaultMathContext(MathContext)
  @see BigDecimalMath#root(BigDecimal, BigDecimal, MathContext)