The expression "4^(1/2)" represents the square root of 4. In mathematical terms, raising a number to the power of 1/2 is equivalent to finding its square root. The square root of a number is a value that, when multiplied by itself, gives the original number. For the number 4, the square root is 2, since 2 × 2 = 4. Therefore, 4^(1/2) equals 2. This concept is fundamental in mathematics and is often used in various applications, including geometry and algebra, where understanding roots and powers is essential.