Me ayudan por favor rápido?

1)<img src="https://tex.z-dn.net/?f=%208y%5E%7B3%7D-27%20x%5E%7B3%7D%20%2B36%20xy%5E%7B2%7D%20%2B54%20x%5E%7B2%7Dy%20" />

2)<img src="https://tex.z-dn.net/?f=%209a%5E%7B2%7D-%20b%5E%7B2%7D%20" />

3)(4xy + 2a)(3x - 2)

4)<img src="https://tex.z-dn.net/?f=8%20a%5E%7B3%7D%2B%20b%5E%7B3%7D%2B12%20a%5E%7B2%7Db%2B6a%20b%5E%7B2%7D" />

5)<img src="https://tex.z-dn.net/?f=%2049y%5E%7B2%7D%20-%20z%5E%7B2%7D%20" />

6)<img src="https://tex.z-dn.net/?f=%2016x%5E%7B2%7D%20-4y%5E%7B2%7D%20" />

7)<img src="https://tex.z-dn.net/?f=%283x%2B%20y%5E%7B2%7D%29%20%281-2z%29" />

8)<img src="https://tex.z-dn.net/?f=27a%5E%7B3%7D%2B%208b%5E%7B3%7D%2B54%20a%5E%7B2%7Db%2B36a%20b%5E%7B2%7D" />

9)3y(a - 2) + 2x(a + 2)

10)<img src="https://tex.z-dn.net/?f=81%20a%5E%7B2%7D%20%20b%5E%7B2%7D%20%20c%5E%7B2%7D%20-%2016b%5E%7B2%7D%20" />

binomioal cubo : - <img src="https://tex.z-dn.net/?f=%20%28a%2Bb%29%5E%7B3%7D%20%3D%20a%5E%7B3%7D%20%2B%20%20b%5E%7B3%7D%20%2B%203a%5E%7B2%7Db%20%2B%203ab%5E%7B2%7D%20" /> - <img src="https://tex.z-dn.net/?f=%28a-b%29%5E%7B3%7D%20%3D%20a%5E%7B3%7D%20-%20b%5E%7B3%7D%20%2B%203a%5E%7B2%7Db%20%2B%203ab%5E%7B2%7D" />

Diferencia de cuadrados :

[img = 10]

Esas son las fórmulas que se usan y en las otras, solo se factoriza.