$\int\frac{x^5+9x^3-9x^2-9}{\left(x^3+9x\right)}dx$
$dy-x^3dx=0$
$39n^2+3n$
$\int\cos^{-5}2xsin2xdx$
$-7\left(-6y-4\right)$
$2\log_{10}\left(y\right)-3\log_{10}\left(x\right)=2$
$2x-8\ge\:9x-10$
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