$9\left(-4+x\right)>36$
$\left(\:+23\right)-\:\left(+8\right)\:$
$121 x ^ { 2 } - 81$
$98^{0.5}$
$4a+12ab$
$12ab+8ab+5ab$
$\left(\tan\left(x\right)\cot\left(x\right)+\sqrt{x}\right)^3$
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