Which term is a symbol used to indicate a root, read as the nth root of x?

Which term is a symbol used to indicate a root, read as the nth root of x?

• A. Power
• B. Radical
• C. Vertex
• D. Volume

Answer: (B)

Radical. The radical sign (the √ symbol) is the symbol used to indicate a root, and when an index is shown, like a small n, it reads as the nth root of x (for example, ∛x is the cube root). The square root is the special case with no index, simply √x. Taking a root is the inverse operation of raising to a power, so x^(1/n) corresponds to the nth root of x. For contrast, a power is about exponents, a vertex is a specific point (like a turning point or corner), and volume measures how much space a 3D object occupies.

Radical. The radical sign (the √ symbol) is the symbol used to indicate a root, and when an index is shown, like a small n, it reads as the nth root of x (for example, ∛x is the cube root). The square root is the special case with no index, simply √x. Taking a root is the inverse operation of raising to a power, so x^(1/n) corresponds to the nth root of x. For contrast, a power is about exponents, a vertex is a specific point (like a turning point or corner), and volume measures how much space a 3D object occupies.