$\frac{tan\left(x\right)}{\cos\left(x\right)}+\frac{sin\left(x\right)}{tan\left(x\right)}$
$x^2+21x+110$
$16a^2-48ab+36$
$\frac{d}{dx}e^x+e^y=e$
$\left(-5\right)^5\cdot\left(-5\right)^7$
$-1000\cdot1.000$
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