y2+y−20y2+17y+72\frac{y^2+y-20}{y^2+17y+72}y2+17y+72y2+y−20
limx→+∞(xln(x+1x)−2x)\lim_{x\to+\infty}\left(x\ln\left(\frac{x+1}{x}\right)-2x\right)x→+∞lim(xln(xx+1)−2x)
11x2−130x+20011x^2-130x+20011x2−130x+200
∫(2x2+8x+17)dx\int\left(\frac{2}{x^2+8x+17}\right)dx∫(x2+8x+172)dx
2(x+5)2+22\left(x+5\right)^2+22(x+5)2+2
5⋅2⋅345\cdot2\cdot3^45⋅2⋅34
(+1) . (+9) . (−4)\left(+1\right)\:.\:\left(+9\right)\:.\:\left(-4\right)(+1).(+9).(−4)
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