$\frac{20x^4+16x^3+8x^2}{4x^2}$
$\sin\left(x\right)=\frac{\sqrt{5}}{3}$
$\int\left(5x^2+7\right)^2dx$
$\int\sqrt{9-1\left(-2x\right)}dx$
$x^2-3x-1>0$
$x^2-6x-280$
$\int-x\sqrt{7-x}dx$
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