The expression (K L)^2 represents the square of the product of two variables, K and L. This means that you first multiply K and L together, and then you take the result and multiply it by itself. Mathematically, this can be expressed as (K L) \times (K L). When expanded, (K L)^2 can also be written as K^2 L^2. This shows that squaring the product results in squaring each variable individually. This property is useful in algebra and helps simplify expressions in various mathematical contexts, such as in equations and functions involving variables.