$\lim_{x\to0}\left(\frac{1-senx}{cos^2x}\right)$
$\sqrt[3]{2^9}$
$-13-\left[-4+\left(-15-8\right)\right]$
$-5,5+1,41$
$f\left(x\right)=-\frac{1}{2\sqrt{x^3}}$
$4x^2+x-14$
$\left(2t^2-3v\right)^2$
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