$\left(4d^3\right)^3$
$\frac{3x}{4}-1\ge7$
$20-10-\left(-7\right)$
$\frac { 2 x ^ { 4 } - 3 x ^ { 2 } + 1 } { x + 2 }$
$3x-x^2-2$
$\int\:\frac{2t-1}{t^2+t-2}dt$
$tan\left(\pi-x\right)$
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