$-y-3\left(-3y+5\right)$

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

$-32\:x\:32$

$\frac{\tan\left(a\right)\left(\sec\left(a\right)-\cos\left(a\right)\right)}{\sin\left(a\right)}$

$\int\frac{1}{8\left(x-1\right)}dx$

$\left(1+\tan\:\left(\theta\:\right)^2\right)=\sec\:^2\:\theta\:+2\tan\:\left(\theta\:\right)$

$-4+73+-1$