$18x+16=18x+16$
$78+\left(109-11\right)\cdot12-8$
$\int\left(\frac{x^2+2x+1}{x+1}\right)dx$
$-\left(t+r\right)$
$-\left(-3y-2\right)+2\left(2y^2+3\right)-\left(3y^2-3y\right)$
$x3-2x^2-16x+5$
$3t\:+\:9\left(4t\:+\:6\right)$
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