$5ax^2+10ax-7a^2x-16ax^2$

$\frac{1}{2}\:2\int_{\frac{11\pi}{18}}^{\pi}\left(\left(-4\cos\left(x\right)^2-\left(1-\cos\left(x\right)^2\right)\right)\right)dx$

$\int\left(\frac{x}{x^4+6}\right)dx$

$\cos\left(x\right)\left(\frac{1+\tan^2\left(x\right)}{\sec^2\left(x\right)}\right)$

$3\left(x-3\right)-2<x+12\left(x+2\right)$

$\left(4m^2n^5-7a^6\right)^2$

$\left(1+\cot\left(y\right)\right)\left(1+\tan\left(y\right)\right)$