Evaluate this expression. \[ 5^{-2} \]

Step 1 ：The expression is asking for the value of 5 raised to the power of -2. In mathematics, a negative exponent indicates that we should take the reciprocal of the base. So, \(5^{-2}\) is equivalent to \(1/(5^2)\).

Step 2 ：Now, we just need to calculate the value of \(5^2\) and then take its reciprocal.

Step 3 ：\(5^2 = 25\)

Step 4 ：So, \(1/(5^2) = 1/25\)

Step 5 ：Final Answer: The value of the expression \(5^{-2}\) is \(\boxed{0.04}\)