Question

bài 10:

5) ( 7 mũ 80 x 8 mũ 70 - 56 mũ 70) : 56 mũ 70

6) 4 mũ 4016 : ( 4 mũ 4017 - 4 mũ 4016

Answer 1

`a, (56^70 . 7^10 - 56^70 ) : 56^70`

`= 56^70 . (7^10-1) : 56^70`

`= 7^10 - 1`

`b, 4^2016 : (4^2016.(4+1))`

`= 1/5.`

Answer 2

5: \(=\dfrac{7^{70}\cdot8^{70}\left(7^{10}-1\right)}{56^{70}}=7^{10}-1\)

6: \(=\dfrac{4^{2016}}{4^{2016}\cdot3}=\dfrac{1}{3}\)