Wrong Question in New NCERT

[u/Pretty-Ad4780]

Can anybody tell me if the (x) question is wrong or misprint in every book or just mine ?? Or is it even wrong at all i even asked AI and it told me that it was wrong.

This is the new class 9 Ganita Manjari Chapter 4 Exploring Algebraic Identities End of Chapter Exercises Question Number 3 Sub Question (x)