$\left(6t+5\right)^4$
$m ^ { 4 } - 17 m ^ { 2 } + 6 m$
$15-1600$
$e\arccoth\left(\ln\left(xy\right)\right)+\sec\left(xy\right)$
$\lim_{x\to\infty}\left(2+\frac{3}{1+\left(x+1\right)^2}\right)$
$4-4sin^2\theta\:$
$2x^2+3x-x^2-7x$
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