$\left(2xy-3z\right)^3$
$a^2+4^2$
$\left(\sin^2\left(x\right)\cos\left(y\right)\right)+\left(\cos^2\left(x\right)\cos\left(y\right)\right)=\cos\left(y\right)$
$\left(m+a\right)^3$
$\:-x^2-9x+10$
$\sqrt{100\cdot81}$
$21c-8c$
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