Упростите выражения 1. b^4b^11:(b^3)^5 ---------------------- (b^5)^4b^4*(b^3)^8...

Question

Упростите выражения
1. b^4b^11:(b^3)^5
----------------------
(b^5)^4b^4*(b^3)^8

2.(b^15)^3(b^3):b^19
--------------------------
b^19b:(b^4)^5

Answer 1

1
b^(4+11-3*5)/b^(5*4+4+3*8)=b^0/b48=1/b^48
2
b^(15*3+3-19)/b(19-4*5)=b^28/b^(-1)=1^29