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

$7x\cdot2x$

$\log\left(x\right)=-3$

$-\frac{4}{7}p+\left(-\frac{2}{7}p\right)+\frac{1}{7}$

$\int\left(5\sqrt{t+2}\right)^{-2}t^{-\frac{1}{2}}dt$

$\left(1-cos^2\:x\right)cos^2x$

$\int a^{3x}\sin\left(5x\right)dx$