$-80-90-40+40$
$\int x^3\left(9\sqrt{x}+\sqrt[4]{x}\right)dx$
$15y+12y+2$
$x^2+5x+4\ge0$
$2\cos^2w$
$-x^2-2x+8<0$
$\lim_{x\to9}\left(-\frac{\left|x-2\right|}{x-2}3\right)$
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