(2x-15):13+51=8 mũ2 $x^{2}$ :4+5 mũ 5:5 mũ3=29 $2012^{9}$.(x-612)= $2012^{10}$

Đáp án `+` Giải thích các bước giải:

`(2x - 15 ) : 13 + 51 = 8^2`

`=> (2x - 15 ) : 13 + 51 = 64`

`=> (2x - 15 ) : 13 = 64 - 51`

`=> (2x - 15 ) : 13 = 13`

`=> 2x - 15 = 13 . 13`

`=> 2x - 15 = 169`

`=> 2x = 169 + 15`

`=> 2x = 184`

`=> x = 184 : 2`

`=> x = 92`

Vậy `x = 92`

`x^2 : 4 + 5^5 : 5^3 = 29`

`=> x^2 : 4 + 5^(5-3) = 29`

`=> x^2 : 4 + 5^2 = 29`

`=> x^2 : 4 + 25 = 29`

`=> x^2 : 4 = 29 - 25`

`=> x^2 : 4 = 4`

`=> x^2 = 4 . 4`

`=> x^2 = 16`

`=> x^2 = 4^2`

`=> x = 4`

Vậy `x = 4`

`2012^9 . ( x - 612 ) = 2012^10`

`=> x - 612 = 2012^10 : 2012^9`

`=> x - 612 = 2012^(10-9)`

`=> x - 612 = 2012^1`

`=> x - 612 = 2012`

`=> x = 2012 + 612`

`=> x = 2624`

Vậy `x = 2624`