Question

Choose the expression that is rational.

A) √(x - 3)
B) |x + 3|
C) 1/(x + 3)
D) ∛(√(x + 3))

Answer 1

The rational expression is 1/(x + 3).

Step-by-step explanation:

The expression that is rational is option C) 1/(x + 3).

A rational expression is defined as a ratio of two polynomials, where the denominator does not equal zero. In option C, the expression 1/(x + 3) is a ratio of the polynomial 1 and the polynomial (x + 3), and the denominator is not equal to zero for any value of x. Therefore, option C is a rational expression.