The range of y = x2 is

For y = x², squaring any real number gives a value that is zero or positive. For example, x = 0 gives y = 0, and x = 2 or x = −2 gives y = 4. Thus the range is y ≥ 0, including zero; it is not all real numbers or only values greater than zero.

AI-written and checked against the verified answer.