$-x^2=-x-6$

$\frac{dx}{dy}+x=x+ye^{y+2}$

$\sec\left(x\right)-\left(\tan\left(x\right)\sin\left(x\right)\right)=\frac{1}{\sec\left(x\right)}$

$\left(y\cos\left(xy\right)-3\cdot x^2\right)dx+\left(x\cos\left(xy\right)+3y^2\right)dy=0$

$x^2-2x+4<0$

$\frac{8a^6b^8c^{10}}{16a^6b^6c^7}$

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