$$4x^2-24x+35=0$$

$$8\cdot\left(7-2\left(6-9\right)\right)$$

$$5^x=25$$

$$\int_{\frac{-2\pi}{3}}^{\frac{\pi}{4}}4\sin\left(x\right)dx$$

$$x\:5\:y\:.\:4nx\:3$$

$$\lim_{x\to0}\left(-5\right)$$

$$-81x+19y-30z+6y+8x+x-25y$$