$\left[\left(-8\right):\left(-2\right)-6:\left(2-5\right)\right]\::\:\left[10:\left(-2\right)-3:\left(1-2\right)\right]$

$\frac{dy}{dx}-7y=sen\left(2x\right)$

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

$\int\left(x+1\right)\left(x+2\right)^6dx$

$\frac{dy}{dx}=\frac{2x-3y}{2x-3y+1}$

$-2\left(-12\right)\left(-3\right)$

$24^2+5ab-14b^2$