$\frac{\cos\left(x\right)-\sin\left(x\right)+1}{\cos\left(x\right)+\sin\left(x\right)-1}-\csc\left(x\right)$
$\lim_{x\to0}\left(e^x-1+x\right)$
$1^0$
$\left(-x^3\right)\cdot\left(2x^3+3x-1\right)$
$3x+2\ge x-5$
$\frac{-4x-1}{3}>1-2x$
$x^2+100x+100$
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