$\lim_{x\to1}\left(\frac{\sqrt{2-x}-1}{2-\sqrt{x+3}\:}\right)$
$\int\ln\left(x^2-3x+2\right)dx$
$\frac{x^2+6x+12}{x+2}<\:1$
$\frac{77x^3}{11x^3}$
$0,75ab^4-2c,\:a=7\:b=4,\:c=3$
$5\tan0-4=7\tan0+11$
$x^2\:-8x+1=0\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:$
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