Question

Tìm x biết : 5^x . ( 5³ )² = 625

Answer 1

Sai đề nha bạn

Answer 2

5^x.5^6=5^4

5^x=5^4:5^6

5^x= tap hop rong

Suy ra x= tap hop rong

Answer 3

\(5^x.\left(5^3\right)^2=625\)

\(5^x.5^6=5^4\)

\(5^x=5^4\text{ }:\text{ }5^6\)

\(5^x=5^{-2}\)

\(\Rightarrow\text{ }x=-2\)

Answer 4

5^x .( 5 ³)² =625

=>5^x .5⁶ =5⁴

=>5^x+6 =5⁴

=>x+6=4

=>x=-2