The expression "n(n^2 + 1)" represents a mathematical formula where "n" is a variable that can take on different numerical values. In this expression, "n" is multiplied by the sum of its square, "n^2," and one. This results in a polynomial that can be used in various mathematical contexts, such as algebra and calculus. When you expand the expression, it becomes "n^3 + n." This shows that the formula includes a cubic term, "n^3," and a linear term, "n." Such expressions are often analyzed in relation to their growth rates and can be useful in solving equations or modeling real-world scenarios in fields like physics and engineering.