Which expression is equivalent to 36x2 - 25?

(6x) 2 - (5) 2. 36 (x) ^2 - 25 = 36 * (x) ^2 - 25. Since 36 = 6^2 and 25 = 5^2, we can substitute this in the expression: 36 (x) ^2 - 25 = (6) ^2 * (x) ^2 - (5) ^2 = (6 * x) ^2 - (5) ^2 = (6x) ^2 - (5) ^2. Therefore, 36 (x) ^2 - 25 = (6x) ^2 - (5) ^2,