Is that your answer or the standard answer? Is that so? If it is square as you said, it should be x-y.
Hehe, I think so, too. However, if you look again, X-3Y can't get the answer you said. I wonder if the answer is wrong. Sorry, I did the same as you.
If you know the answer, can you tell me the correct solution?
Sorry, I don't understand either. I have the same solution as downstairs, so I think the answer is wrong. By the way, did you write the wrong question? I think you are a little careless. Hehe, please tell me if you know the answer! thank you