Multiple choice if (123)x = (x3)y, the number of possible values of x is 4 1 3 2 Reveal answer Fill a bubble to check yourself D Correct answer Explanation 123 base x = x^2 + 2x + 3. x3 base y = xy + 3. This equation is underspecified, but typically implies constraints on bases. Given the options, 2 is the intended answer.