$140+570+300+1200+800+200+300$
$4a^2-12a=\left(-a\right)\left(a-3\right)$
$\int_0^3lnx\:dx$
$\lim_{x\to2}\left(\frac{ax+b-4-a}{x-2}\right)$
$10-15\cdot9+16$
$\left(\frac{1}{2}a+\frac{2}{3}b^{2}\right)^{3}$
$\:2x\:-\:5\:=\:23$
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