$\frac{5x}{2a^2}-\frac{8x}{8a}$

$x^2+\:x-12\:=\:0$

$7mn\frac{3x}{7}-1$

$\left(y\cos\left(xy\right)-5x^4\right)\cdot dx+\left(x\cos\left(xy\right)+5y^4\right)dy=0$

$\frac{dy}{dx}=3x^2-4x+2$

$\int\:\frac{2x}{3x^2-9}dx$

$\int\left(\frac{ln\left(x\right)^{24}}{x}\right)dx$