(x2+y2+z−xy−xz−yz)(x+y+z)\left(x^2+y^2+z-xy-xz-yz\right)\left(x+y+z\right)(x2+y2+z−xy−xz−yz)(x+y+z)
x2+x−11x^2+x-11x2+x−11
20n−20n−2=4n\frac{20}{n}-\frac{20}{n-2}=\frac{4}{n}n20−n−220=n4
6x2y2b+84x36x^2y^2b+84x^36x2y2b+84x3
(x−4)(x+8)\left(x-4\right)\left(x+8\right)(x−4)(x+8)
limn→∞10n+32nn\lim_{n\to\infty}\sqrt[n]{\frac{10n+3}{2^n}}n→∞limn2n10n+3
∫0∞ e−usin(wu)du\int_0^{\infty\:}e^{-u}\sin\left(wu\right)du∫0∞e−usin(wu)du
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