$\int\left(\frac{x-2}{\sqrt{1-x^2}}\right)dx$

$\left(x^{3a}+20\right)\left(x^{3a}-20\right)$

$\left(\frac{9}{5}-10w^7\right)^2$

$\left(10x-3x^3+4\right)^2$

$2\sec^2\left(x\right)+\tan\left(x\right)=5$

$\int_{-\frac{\pi}{4}}^{\frac{\pi}{4}}\left(\sec\left(x\right)\tan\left(x\right)\right)dx$

$\sqrt{43.5}\left(21.5\right)\left(14.25\right)\left(7.5\right)$