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xxx is a positive real number which satisfies
11x2−21x+31+11x2−21x−9=8. \sqrt {11x^2-21x+31}+\sqrt {11x^2-21x-9}=8. 11x2−21x+31+11x2−21x−9=8.
What is the value of
11x2−21x+31−11x2−21x−9? \sqrt {11x^2-21x+31}-\sqrt {11x^2-21x-9} ? 11x2−21x+31−11x2−21x−9?
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