$3x-2y+5-8x+5y-3$

$a+\left(\left(-2a+b\right)-\left(-a+b-c\right)+a\right)$

$\int\frac{x^2-9}{x}dx$

$\int\left(1+tagx\right)^2\:dx$

$\frac{1+\cot\left(x\right)}{\csc\left(x\right)\cot\left(x\right)}+\frac{\cot\left(x\right)-1}{\csc\left(x\right)}$

$17x+13=32-2x$

$36x^{2}+108xy+8$