$\tan\left(\csc\left(x\right)-\sin\left(x\right)\right)=\cos\left(x\right)$

$-6x^2-x^2y$

$\frac{-x\left[\left(\frac{2}{9}\right)^{-1}x^{-5}y^{-9}m^{-a-5}\right]^{-2}}{-5a\left[\left(\frac{1}{m^3}\right)^1\right]^0}$

$\int_2^6xdx$

$\left(x^{3y^2}-5\right)\left(x^3y^2+5\right)$

$18\cdot3-4^2+2$

$\frac{cos\left(x\right)}{cos\left(x\right)-cos^3\left(x\right)}$