1. x^2 : 2^2 = (3^2)^2
x^2 : 2^2 = 3^4
x^2 = 3^4 × 2^2
x = 3^2 × 2 = 18
2. 25^2 - x^2 = 24^2
x^2 = 25^2 - 24^2 = 625 - 576 = 49 = 7^2
x = 7
3. x : 10^3 = 10^2
x = 10^2 × 10^3
x = 10^5 = 100000
4. 144 : x = 3^2
x = 144 : 3^2 = 144 : 9 = 16
Dacă cumva era 144 : x^2 = 3^2 => x = 4
5. 3^2 + x^2 = 5^2
9 + x^2 = 25
x^2 = 25 - 9 = 16
x = 4
6. 324 : 5^x = (3^2 × 2)^2
5^x = 324 : (9×2)^2 = 324 : 18^2 = 324 : 324 = 1 = 5^0
x = 0