$$8\tan^2-1=3tanx+4$$

$$\int\frac{4x^2-6x+6}{2x+3}dx$$

$$\frac{y}{xz\left(x+y\right)}$$

$$a^2\left(a+b\right)-a\left(a+b\right)-\left(a+b\right)$$

$$7\cdot2xy^3$$

$$8y-4<52$$

$$\lim_{x\to\infty}\frac{2^x}{3^{x-1}}$$