$10x^2-x+3$
$\int_{e^{11}}^{\infty}\left(\frac{1}{xlnx}\right)dx$
$\int\frac{x^2}{\left(2x+1\right)^2}dx$
$\left(1\right)^4-3\left(1\right)^3+7\left(1\right)+6$
$5x^2-x\left(5x-3x\left(x-8\right)-11\right)+3$
$49x^2-y^2$
$\frac{3}{4x^2}+\frac{2}{4x^2}-\frac{3}{4x^2}$
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