$\frac{2tan^2x}{sec^2x}-1$

$\int\left(az+bx\right)^2dx$

$\int e^{3x}\left(2-5e^{3x}\right)^5dx$

$\frac{1}{7}y-5=-16$

$\int x\left(x^2+x^{-2}\right)dx$

$\left(\cot\left(x\right)-\csc\left(x\right)\right)\left(\cos\left(x\right)x+\right)$

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