$5x^4+7x^3-2x^2-3x$
$-4x-2x$
$\int\frac{\sin\left(x\right)}{1-\cos^2\left(x\right)}dx$
$\left(y-9\right)\left(y+5\right)$
$1010+0111$
$\sin^2\left(a\right)$
$\lim_{x\to\infty}\left(\frac{2}{x}-3\right)$
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