Question

5 mũ 3 . 5 mũ x - 2 = 125 mũ 2

lưu ý 5 mũ x - 2 là x - 2nha

Answer 1

`5^{3}.5^{x-2}=125^{2}`

`=>5^{3+x-2}=(5^{3})^{2}`

`=>5^{x+1}=5^{3.2}=5^{6}`

`=>x+1=6`

`=>x=5`

Answer 2

\(5^3.5^{x-2}=125^2\)

\(\Leftrightarrow125.5^{x-2}=125^2\)

\(\Leftrightarrow5^{x-2}=125\)

\(\Leftrightarrow x-2=3\Leftrightarrow x=5\)

Answer 3

có ai chơi ff k

Answer 4

5³ . 5^x-2 = 125²

=>5^3+x-2 = (5³)²

=>5^3+x-2 = 5⁶

=>5^x+1 = 5^3.2 = 5⁶

=> x+1 = 6

     x     = 5 

=> x=5