$\frac { x ^ { 4 } - 4 x ^ { 2 } + 6 } { x + 2 }$
$14i-61+5m+18m-9m$
$-\:2hx\:-\:2hx\:-\:2hx$
$7xy-14y+11zx-22z$
$x+7+2x+8$
$\int\frac{3ln\left(x\right)}{x^4}dx$
$x^2+x+144$
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