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High school mathematics compulsory 51 yuan quadratic inequality problem
I think there is something wrong with the topic.

According to the meaning of the question

(x-a)(x+a- 1)- 1 & lt； 0

x？ x-a？ -a- 1 & lt； 0

A parabola with an upward opening does not hold true for any real number X.

Please read the title clearly. What's wrong?

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