$\frac{dp}{dt}=\frac{1}{900}p\left(9-p\right)$

$\frac{6}{5}x>\frac{3}{5}$

$\frac{\sin\left(0\right)+\cos\left(0\right)\cdot\tan\left(0\right)}{\cos\left(0\right)}=2\tan\left(0\right)$

$6x^2-5+3x-2-2x^2+x-4x^2$

$\int\frac{-\frac{19}{49}x}{\left(x-4\right)^2}dx$

$49x^2-81y^6$

$\left(3u^4-6\right)\left(3u^4-15\right)$