$9-\left(-\:\left(\left(-6\:+\:11\right)\:+\:\left(-\:3\:-\:7\right)\right)\right)$

$f\left(x\right)\:=\:2ln\left(x-1\right)$

$-170-54$

$\left(1+y\right)dy-ydx=0$

$\left|\left(-1^{15}\right)\cdot\left(2^3\right)^2\cdot\left(-3^2\right)\right|^2$

$\int8x^2\left(4x^3+12\right)^{-3}dx$

$\left(3x-5y\right)\left(2x+y\right)$