$$\frac{4x-2}{2x-8}$$

$$16\cdot12$$

$$\int\left(\frac{1}{6}\right)\cdot\left(2-7\cdot x\right)\cdot\left(sinx\right)dx$$

$$\sec^2\left(x\right)-\tan\left(x\right)-3$$

$$3x+4<5$$

$$4x^2-10x^3+8+2x^4$$