$9^{x}-90\cdot3^{x}+729=0$
$\frac{dy}{dx}=\sin\left(5x\right);y=1$
$\cos\left(x\right)^2+1+\sin\left(x\right)^2\cos\left(x\right)^2=1$
$\left(4pq^2\:+\:3q\right)^2$
$\left(a^4+5\right)\left(5a^4-11\right)$
$x^2-60x+50$
$\int\frac{x-3}{\left(x^2-6x+25\right)^2}dx$
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