This ... can't be said to represent, after all, the meaning is different, but you don't have to answer, it belongs to the default expression, not "generation"

Generally speaking, if the conclusion is required by the topic, most people can see it and understand it as a good answer.

"Answer" is a formal writing format, and I don't remember any special requirements.

Like a question

The product of the difference between the sum of two positive integers A and B is 5. Find the numbers a and B.

Solution (A+B) (A-B) = A 2-B 2 = 5

Because: there are 3 2-2 2 = 5 in the positive integer range.

So a=3 b=2

No need to answer: a=3 b=2