$49+14a+a^2$
$4\left(10^x\right)-27=13$
$2p^3-\frac{3p}{p+2}$
$\left(a-5b\right)^2\:\left(x+2\right)^2$
$y^2+\frac{2y}{3}$
$\left(+50\right)+\left(-45\right)-\left(85\right)-\left(-129\right)$
$8xy^2-4x^2y+x+7x^2$
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