$x^2+18x+162$
$\frac{x^2+2xy+y^2}{x^2+y^2}$
$1.6^2-0.5\cdot3.3$
$\frac{x^3+y^3}{x^3+y^3}$
$8m+3-2-10+9m$
$\:\:\:\:\:\:4-\left[5\:\:\:\:\:-\:\:\:\:\:\left(-5\right)\right]$
$2a^2b^32c^3$
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