Simplify: left(x−frac1xright)left(x+frac1xright)left(x2+frac1x2right)\\left(x-\\frac{1}{x}\\right)\\left(x+\\frac{1}{x}\\right)\\left(x^2+\\frac{1}{x^2}\\right)left(x−frac1xright)left(x+frac1xright)left(x2+frac1x2right) (assume x≠0x\neq0x=0).
x4−frac1x4x^4 - \\frac{1}{x^4}x4−frac1x4
x4+frac1x4x^4 + \\frac{1}{x^4}x4+frac1x4
x2−frac1x2x^2 - \\frac{1}{x^2}x2−frac1x2
left(x−frac1xright)4\\left(x-\\frac{1}{x}\\right)^4left(x−frac1xright)4