Use the definition of absolute value and a proof by cases to prove that for all...

Use the definition of absolute value and a proof by cases to prove that for all real numbers x, | − x + 2| = |x − 2|. (Note: Forget any previous intuitions you may have about absolute value; only use the rigorous definition of absolute value to prove this statement.)

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Colby Messinger answered 1 year ago

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