$3x^2+343>0$
$2b^2-7b-10$
$81w^3+216b^3$
$\lim_{x\to\infty}\left(\sqrt{2x^2-3x-4}-\sqrt{2x^2+4}\right)$
$\int\frac{1}{\left(2x+5\right)^2+9}dx$
$\left(8x^3-2x^2+3x\right)^2$
$10+4x=4+10x$
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