$4-2x\le15$
$2\left(a+b\right)-4\left(c-b\right)+\sqrt{c-b}$
$8x^3+2x^3+3x^3$
$\frac{d}{dx}\:\frac{cscx}{cot^2x}$
$4x+3y-x$
$x\left(x-5\right)\ge7+x^2+2x$
$a^2b^4-c^2$
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