m⋅4≥20m\cdot4\ge20m⋅4≥20
x4−3x−5x−2\frac { x ^ { 4 } - 3 x - 5 } { x - 2 }x−2x4−3x−5
6xy3x4\frac{6xy}{3x^4}3x46xy
limx→1(3x)1x\lim_{x\to1}\left(\frac{3}{x}\right)^{\frac{1}{x}}x→1lim(x3)x1
((3−4xy)2)\left(\left(3-4xy\right)^2\right)((3−4xy)2)
∫2x+6x2−1dx\int\frac{2x+6}{x^2-1}dx∫x2−12x+6dx
∫(x+1)x(x−2)dx\int\frac{\left(x+1\right)}{\sqrt{x}}\left(x-2\right)dx∫x(x+1)(x−2)dx
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