$\left(a^2-6a+9\right)$

$-2x+16>0$

$\int\frac{sec3x}{e^5}dx$

$\int\:\frac{1}{9}x^6\left(\sqrt{\frac{9}{2}-\frac{7}{8}x^7}\right)dx$

$\log\left(x+1\right)+\log\left(2x-1\right)=1+\log\left(2\right)$

$\int_{\frac{\pi}{2}}^{\frac{3\pi}{4}}\cos\left(x\right)dx$

$6n^2m^2\left(-n^3m^2-4\right)$