Question

Tính:

5²⁰ : (5¹⁵.15 + 5¹⁵.10).

Answer 1

5²⁰ : ( 5¹⁵. 25 )

= 5²⁰ : ( 5¹⁵ . 5² )

= 5²⁰ : 5¹⁷ = 5³ = 125

Answer 2

\(=5^{20}:5^{17}=125\)

Answer 3

\(5^{20}:\left(5^{15}.15+5^{15}.10\right)\)

\(=5^{20}:5^{15}.\left(15+10\right)\)

\(=5^5.25\)

\(=5^7\)

Answer 4

=5^20:5^15(15+10)

=5^5.5^2

=5^7

Answer 5

5²⁰ : (5¹⁵.15 + 5¹⁵.10)

=5^20 :[5^15.(15+10)]

=5^20 :[5^15.25]

=5^20 :5^17

=5^3

=125

Answer 6

=5^20:[5^15.(15+10)]

=5^20:(5^15.25)

=5^20:(5^15.5^2)

=5^20:5^17

=5^3

Answer 7

dấu ^ là dấu mũ