$12 + 5 - 1 + 5 - 2 + 2 + 3$

$\frac{\csc^2\left(x\right)-1}{\cos\left(x\right)}$

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

$\left(1-\cos\left(x\right)\right)\sec\left(x\right)=\sin\left(x\right)^2\sec\left(x\right)$

$3x^{2}+2x-5$

$x^2+22x+32$

$\tan\left(-x\right)=-tanx$