Ada yang bisa jawab ?

1. 16a^5b^4c/4abc
= 16. a^5.b^4.c/ 4.a.b.c
= 4.a^5-1.b^4-1.
=4a^4.b^3
2.2u(u^4.y^2.z)/uyz
= 2(u^2)^4.y^2.z/uyz
=2.u^8-1.y^2-1
=2u^7.y
3. (3a+2b)^3
= 27a^3+54a^2b+36ab^2+8^3


sorry if there are wrong