Hi everyone! I have about 200 problems on factoring, all due tmrw! I'm really stuck on a few of these, and if you could help me that would be great!
12m^3 y - 75my^3
10x^3 y + 21x^2 y^2 + 9xy^3
2a^3 b +11a^2 b^2 - 21ab^3
6x^3 y + 7x^2 y^2 - 20xy^3
2x^4 -512
243 - 3y^4
625m^4 - 16
Thanks so much!