$\int\left(4x+5\right)^3\:dx$

$\frac{\left(sec\left(x\right)tan\left(x\right)\right)}{cot\left(x\right)csc\left(x\right)}$

$\int_{\frac{\pi}{6}}^{\frac{\pi}{2}}2cot^2\left(x\right)dx$

$144 p ^ { 2 } - 900 q ^ { 2 }$

$\sin\left(x\right)=\frac{9}{16}$

$-9\sin^2\left(x\right)-\cos^2\left(x\right)=-3$