$x^4-6x^2+7$
$\lim_{x\to\pi}\left(\frac{x+\pi}{\csc\left(x\right)+\cot\left(x\right)}\right)$
$43-\left(-14\right)$
$0x\cdot1x$
$x^2-2x+10=0$
$x^2+2x+26$
$9a^{10}b^{14}-121$
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