$$\left(547\right)\left(22\right)$$

$$-7+9z+11n-2z-5n+6$$

$$\left(x^4.y^4\right)^3$$

$$\frac{1-\sin^2\left(x\right)}{\sin\left(x\right)\cot\left(x\right)}$$

$$\lim_{x\to0.7}\left(6x+1\right)^{\cot\left(x\right)}$$

$$x^3y^3+3^3$$

$$-8t+16t+t^2$$