Bài rút gọn
a) 25^4.5^8/ 156^6
b) 4^15.9^6/ 6^8.16^3
c) 4^3+8.4^2+12^3/90
d) -2.3^4-3^4.6/16.81
e) 5.7^4+4.7^4/49.2-49.20

Bài 1
a) (5x - 1)^4= 16
b) (x-5)^5= -32
c) (x-8)^8= (x-8)^6

a,(-3/2)^7 :(-1,5)^5
b, (1/2)^4 . 2^6
c, 4^20 : 16^5
d, (-3.1/4)^2
Bài 2
a) (5x - 1)^4= 16
b) (x-5)^5= -32
c) (x-8)^8= (x-8)^6

Bài 1:
a,(-3/2)^7 :(-1,5)^5
b, (1/2)^4 . 2^6
c, 4^20 : 16^5
d, (-3.1/4)^2
Bài 2
a) (5x - 1)^4= 16
b) (x-5)^5= -32
c) (x-8)^8= (x-8)^6