$\int_0^4\left(\frac{9x^2}{\left(2x+1\right)\left(x+2\right)^2}\right)dx$

$\tan\left(60\right)=\sin\left(60\right)\sec\left(60\right)$

$8x-3y\sqrt{x^2+1}\frac{dy}{dx}=0$

$2-\left(5+2\right)-\left[\left(10+7\right)-\left(6-3\right)\right]$

$j^4-17j^2+16$

$5x^76x^63x^5$

$-45\cdot17$