$$36m^2+10m+m^3$$

$$\cos\left(\arccos\left(-.1\right)\right)$$

$$2\sqrt[3]{40}+\sqrt[3]{135}$$

$$6x^7-3yz^2+4y^3-6x^7-8yz^2-5y^3$$

$$\left(x^2y-2z\right)^2$$

$$6a=18$$

$$\sqrt[4]{\left(\left(1.9\right)-2\right)\left(\left(2.9\right)-3\right)}$$