$\frac{\frac{1}{2\sin\left(x\right)\cos\left(x\right)}-\tan\left(x\right)}{\cos\left(x\right)}$

$\int_{-\pi}^{\pi}4\left(\sin x+cos\:x+\frac{3}{2}\:\right)dx$

$4-\left(5-\left(8+3-7\right)+6\right)-9$

$\int\frac{x^3+4}{\left(x+6\right)\left(x+5\right)}dx$

$3x^2-4x+8$

$\sqrt{72x}^2$

$\log_{x+6}\left(11\right)=6$