(1sin2x−tan2x)(1sin2x+tan2x)\left(\frac{1}{sin^2x}-tan^2x\right)\left(\frac{1}{sin^2x}+tan^2x\right)(sin2x1−tan2x)(sin2x1+tan2x)
(10x5)(10x5)\left(10x^5\right)\left(10x^5\right)(10x5)(10x5)
∫−x2−x+1x(−x2−1)dx\int\frac{-x^2-x+1}{x\left(-x^2-1\right)}dx∫x(−x2−1)−x2−x+1dx
limx→∞(20x4−14ex−1)\lim_{x\to\infty}\left(\frac{20x^4-1}{4e^x-1}\right)x→∞lim(4ex−120x4−1)
8x−6 2x8x-6\:2x8x−62x
987\frac{\sqrt{98}}{7}798
limx→2(x2+2xx+2)\lim_{x\to2}\left(\frac{x^2+2x}{x+2}\right)x→2lim(x+2x2+2x)
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