The expression "log(25) log(25)" represents the square of the logarithm of 25. If we let ( x = \log(25) ), then the expression simplifies to ( x^2 ). The value of ( \log(25) ) can be calculated as ( \log(5^2) = 2\log(5) ). Thus, ( \log(25) log(25) = (2\log(5))^2 = 4(\log(5))^2 ).