$-2x\left(4x-9\right)+3\left(7-x\right)$
$\int5^{-x}dx$
$\int e^44x\:dx$
$\frac{x}{x-5}>6$
$\left(x+w\right)^7$
$x^{4+x^{3-x-1}}$
$-x+5\le11+2x$
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