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Mathematics is all true.
First of all, I think you have a good attitude and you are confident (as you can see from your doubts about the answer). At the same time, on the other hand, the answer is correct this time. The specific reasons are as follows:

If we find out the key word "inverse proposition", it is not difficult to think of the concept of inverse proposition, that is, transpose the conditions and conclusions of the original proposition (PS: transpose negative proposition), and we can get the inverse proposition "If x 2-3x+2 = 0, then X=2" equation is two solutions, and X=2 is only a part of the solution, so the scope is expanded and it is a false proposition. (Unless otherwise specified in the title, the relationship between the default condition and the conclusion is "AND")

From your question, I find that your knowledge is not solid. I have a formula here that can help you.

Judge the truth:

(1) The law of truth and falsehood of "harmony": everything is true, and one false must be false (ps: corresponding intersection).

(2) The law of truth and falsehood of OR: Everything that is false is false, and there must be a truth (and).

(3) the law of truth and falsehood in Fei: the opposite of truth and falsehood (supplementary set)

It can also be judged by connecting series-parallel circuits in physics.

If you don't understand it thoroughly, you can look through the textbooks (PEP electives 1- 1, 2- 1 have relevant knowledge), and there are electronic textbooks on PEP.