$-\left(4-2+9-8-3+1\right)+\left(-2-4+3\right)$
$x+3>41$
$-\frac{5csc^2\left(7x^2\right)}{tg\left(7x^2\right)}$
$0,252+140$
$15x-x-45x$
$\int\frac{1}{\left(x^2+2x+\right)^2}dx$
$\sin x=\frac{5}{6}$
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