3x3+13x2−13x+2x+1\frac{3x^3+13x^2-13x+2}{x+1}x+13x3+13x2−13x+2
(a2−3)(a+5)\left(a^2-3\right)\left(a+5\right)(a2−3)(a+5)
(1+910)x\left(1+\frac{9}{10}\right)^x(1+109)x
21421^4214
∫−3x3dx\int-3x^3dx∫−3x3dx
(1+cot2(x))(cos2(x))cot2(x)=1\frac{\left(1+cot^2\left(x\right)\right)\left(cos^2\left(x\right)\right)}{cot^2\left(x\right)}=1cot2(x)(1+cot2(x))(cos2(x))=1
limx→3(x3−27x−3)\lim_{x\to3}\left(\frac{\sqrt{x^3}-\sqrt{27}}{x-3}\right)x→3lim(x−3x3−27)
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