$3\ln\left(a\right)-\ln\left(c\right)+2\ln\left(v\right)-2\ln\left(a\right)+2\ln\left(v\right)$
$\frac{343b^6-8}{7b^2-2}$
$f+f$
$sin\left(270-a\right)$
$2x<6$
$x+y=49$
$\lim_{x\to\frac{\pi}{2}}\left(\tan\left(x\right)\right)^{x\:-\:\frac{\pi}{2}}$
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