$6r^3+7r^4-r^4+3r^3$
$\int\frac{9}{\left(x^2+9\right)^2}dx$
$-104=8x$
$\sqrt[4]{5}^8$
$\frac{dy}{dx}=3e^{3y+2x}$
$2x^2-3x-5=0$
$\left(-4+3i\right)^2$
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