$\begin{array}{1 1} (x^4+1)^{1/4}+c \\ -(x^4+1)^{1/4}+c \\ -\bigg(\frac{x^4+1}{x^4}\bigg)+c \\ \bigg(\frac{x^4+1}{x^4}\bigg) ^{1/4} +c \end{array} $