Giups em với em cho ctrlhn nha

Đáp án+Giải thích các bước giải:

 `a, 5^{25} . 5^{x - 1} = 5^{25}`

`=> 5^{x - 1} = 1`

`=> x - 1 = 1`

`=> x = 2`

`b, x - 48 : 16 = 37`

`x - 3 = 37`

`x = 40`

`c, 4^x . 64 = 1024`

`4^{x} . 4^{3} = 4^5`

`4^x = 4^2`

`=> x = 2`

`d, 3^{x + 1}.81 = 243`

`3^{x + 1} . 3^4 = 3^5`

`3^{x + 1} = 3^1`

`x + 1 = 1`

`=> x = 0`

`e, 2. 5^{x + 2} = 250`

`5^{x + 2} = 125`

`5^{x + 2} = 5^3`

`x + 2 = 3`

`=> x = 1`

`f, 6^{x + 1} . 36^7 = 6^{10}`

`6^{x + 1} . (6^2)^7 = 6^{10}`

`6^{x + 1} . 6^{14} = 6^{10}`

`6^{x + 1} = 6^4`

`x + 1 = 4`

`=> x = 3`

`g, 7^{2x - 1} . 49 = 7^{17}`

`7^{2x - 1} . 7^2 = 7^{17}`

`7^{2x-1} = 7^{15}`

`2x - 1 = 15`

`2x = 14`

`=> x= 7`

`h, 10^{2x + 1} . 100 = 10^{23}`

`10^{2x + 1} . 10^2 = 10^{23}`

`10^{2x + 1} = 10^{21}`

`2x + 1 = 21`

`2x = 20`

`=> x = 10`

`@ngocdiep`