$$\left(-1\right)\cdot\left(-3\right)\cdot\left(-6\right)$$

$$10x-18$$

$$\int\frac{16}{\left(x-2\right)\left(x-2\right)}dx$$

$$x^{2\:}-5+\frac{25}{4}$$

$$-6a^2b-\left(-10a^2b\right)$$

$$\frac{dy}{dx}=3xy+3$$

$$\left(x^2+y\right)^2$$