$$\left(x\right)^3+2\left(x\right)\left(7\right)+\left(7\right)^3$$

$$\sqrt[3]{c^8b^4}^2$$

$$f\left(x\right)=\left(x^2-2\right)^2$$

$$-362-634$$

$$2cos^2x-5cosx-3=0$$

$$10y^2+70y+60$$

$$\left(\frac{1}{2}y^2-6\right)^3$$