$\sec\left(x\right)^4-2\sec\left(x\right)^2\tan\left(x\right)^2+tanx^2$

$2g+g$

$\left(9x^3y^2-3x^4\right)^2$

$306=\left(9-2x\right)\left(30-2x\right)+2\left(30-2x\right)\left(x\right)+2\left(9-2x\right)\left(x\right)$

$20+90+3$

$\int\frac{2-4x}{\left(x+2\right)\left(x+3\right)}dx$

$m^2-4m-5$