$\frac{tan^2c}{sinc}$
$2x^2=162$
$5x^2-37x-24$
$\lim_{x\to o}\left(\frac{1}{x^{1-x}}\right)$
$\int_{-2}^{\frac{1}{2}}\left(\frac{x}{-1+x^2}\right)dx$
$\left(\frac{3}{2}x^{n-1}-\frac{1}{9}\right)\left(\frac{3}{2}x^{n-1}+9\right)$
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