$\sin^2\left(30\right)+\cos^2\left(60\right)$
$\int\:\left(5x-3\right)^3\cdot\:\:e^{2x}dx$
$\frac{100q^2-4998q+50}{q^2-50+1}$
$r^2-12r+41=0$
$\frac{d}{dx}t^4-18t^3+25$
$\sqrt{x}^4.x^4$
$\left(x-1\right)y\frac{dy}{dx}=1+y^2$
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