If x and y are different integers and x^2 = xy, which…

If x and y are different integers and x^2 = xy, which of the following must be true ? I. x = 0 II. y = 0 III. x = -y

This problem repeats another one in the library (at most with different numbers), so it's left out of browsing.

AQuA-RAT — Algebra Question Answering with Rationales (Ling et al., DeepMind, 2017) · train #80957