$-y^2-3y-2$
$\left(-1\right)^n\left(\frac{n^2}{2n^2+n}\right)^n$
$-87-+132$
$\int\frac{4lnx}{x^3}dx$
$\lim_{x\to0}\cos\left(2x\right)^{\frac{3}{2x^2}}$
$-4\cdot9-7$
$-\left(9-5+12\right)+16-3$
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