$\lim_{x\to\infty}\left(\sqrt{x+4}-\sqrt{x+3}\right)$
$\frac{sin\left(x\right)+cos\left(x\right)}{\sin\left(x\right)}=\frac{1}{tan\left(x\right)}$
$0.3+5-0.16-3+14.324$
$-\left(-6+10-1\right)$
$2x\left(9+y\right)-10y=12$
$12x^{12}-24x^9+12x^6$
$x-9=4$
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