Question

Factorise -x^4 - (x-z)^4

Answer 1

\left[x _{4}\right] = \left[ \frac{z}{2}+i \,\sqrt{\frac{1}{2}}\,\sqrt{\left( \frac{3\,z^{2}}{2}+\sqrt{2}\,\sqrt{z^{4}}\right) }\right][x​4​​]=[​2​​z​​+i√​​2​​1​​​​​√​(​2​​3z​2​​​​+√​2​​​√​z​4​​​​​)​​​] totally answer