$-5x+6-7y+9x-10-2y$
$\left|+6\right|+\left|+6\right|$
$2x-3xy^2\left(2a^3y\right)$
$\left(\frac{2}{5}x\:+\frac{1}{4}\right)^2$
$\arcsin\left(-0.5\right)$
$\left(3-5\right)^2+3$
$3x^5-9x^3z^4$
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