$\ln e=1$
$\frac{\left(1+2v\right)}{\left(v^2+v+1\right)}dv=-\frac{3}{x}dx$
$1-\sin\left(x\right)=1-\sin\left(x\right)^2$
$146\:+\:4,12$
$1-216m^3$
$25z^2+70z+49$
$l^x\frac{dy}{dx}=2x$
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