$\left|\left(+722\right)+\left(+938\right)\right|-\left|\left(-284\right)-\left(-273\right)\right|+\left|\left(-173\right)-\left(+26\right)\right|$
$6x^2+3xy$
$\int\frac{-3x+14}{x^2+2x+7}dx$
$\left(n+\frac{5}{4}\right)^3$
$\left(3a^b\right)\left(3a^b\right)$
$-x^2+2x-3$
$64x^7y^7-xy^{13}$
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