$45\:.\:25\:.\:0,0390625\:$
$4.6+5.8+7.2$
$-\sin\left(2x\right)-\sin\left(x\right)$
$x-5\cdot x+5$
$\lim_{n\to\infty}\left(\frac{n\sin\left(n\right)}{1+n^2}\right)$
$\left(2xy+3x\right)+\left(5xy+5x\right)+\left(3xy+4x\right)$
$f\left(x\right)=\frac{1}{\left(10+x\right)^2}$
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