$\frac{\frac{1}{1}}{\frac{1}{1}}$
$5x^2-8-4x^2-9$
$2y^2+20y+25$
$\frac{dy}{dx}=\frac{y\cos\left(0.25x\right)}{40}$
$2cosx^2-2cosx-1=0$
$\int_{3x}^{3x^2}\left(\frac{3t+5}{2t-2}\right)dt$
$-4\left(-7+9\right)+8$
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