$$\int sin2\:t\:cost\:dt$$

$$-14=7n$$

$$\left(-3xy^3z^2\right)\cdot\left(-6x^4yz^5\right)$$

$$\left(x\:-\:0.5\right)^2$$

$$\frac{d}{dx}\left(x+8\right)^{sinx}$$

$$\left(x-4\right)^2=\frac{59}{4}$$

$$20x+19y=2019$$