Verbal | Embedded Question

In the exercise set 18 for GMAT Club Ultimate Grammar Book V2.0, I wanted to understand how one sentence is correct and the other one is not.
The following information question had to be converted into an embedded question.

Q. How do you do this algebra homework?
A. Could you tell me...........?

My answer: Could you tell me how you do this algebra homework?
Correct Answer: Could you tell me how to do this algebra homework?

My intention is not to question the veracity of the answer provided in
...

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