Question

5 ^ 2 * x - 9

Answer 1

Giải lại

\(\text{5}^{2}.x-9=125\)

⇒\(\text{5}^{2}.x=125+9\)

⇒\(\text{5}^{2}.x=134\)

⇒\(x=134:\text{5}^{2}\)

⇒\(x=\frac{134}{25}\)

Vậy \(x=\frac{134}{25}\)

Answer 2

5^2*x-9=125

=> 25x = 134

x=134/5

Answer 3

5^2*x-9=125

=> 25x = 134

x=134/5

Answer 4

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

⇒\(\text{5}^{2}.x=\text{5}^{3}\)

⇒\(x=\text{5}^{3}:\text{5}^{2}\)

⇒\(x=5\)

Vậy x=5