$13x^2y+9x^2y$
$\left(\:x^4\:-\:2x^2\:\:-\:3\:\:\:\right)$
$2\left(2x+3\right)-10>6\left(x-2\right)$
$\frac{sec\theta\:}{cos\theta\:}-\frac{tan\theta\:}{cot\theta\:}$
$x-1000>\frac{x}{2}$
$\frac{2}{3}w=14$
$3+2+2$
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