−567+45-567+45−567+45
20− (−12)20-\:(-12)20−(−12)
x2+4x+12x^2+4x+12x2+4x+12
(3+x)(3+2x)+(5+2x)(5−3x)+(3x−7)(2x+5)\left(3+x\right)\left(3+2x\right)+\left(5+2x\right)\left(5-3x\right)+\left(3x-7\right)\left(2x+5\right)(3+x)(3+2x)+(5+2x)(5−3x)+(3x−7)(2x+5)
2232^{2^3}223
limx→n( (1+an−1))\lim_{x\to n}\left(\:\left(1+\frac{a}{n-1}\right)\right)x→nlim((1+n−1a))
x2+0x+2x−1\frac{x^2+0x+2}{x-1}x−1x2+0x+2
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