$49x^2+14xy+y^2$
$\frac{y+5}{\frac{5}{4}-125}$
$\left(m-5\right)\left(m+2\right)$
$\lim_{x\to\infty}\sin\left(\pi x\right)^x$
$\lim_{x\to\infty}\frac{\sqrt{4x^4-x}}{2x^2+3}$
$72y+108z$
$3x+4\le2x+6$
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