$3tan^2x-1=8$
$-\left(a+2\right)\left(3+2a\right)$
$36y^2-48$
$2x^2-8x-24\le0$
$\int\left(8x^7e^{x^8}\right)dx$
$x-1\le2$
$\lim_{x\to\infty}\left(3+\frac{1}{x}\right)^x$
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