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OpenStudy (anonymous):
does the equation x+4=x+4 have more than one real number solution?
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myininaya (myininaya):
yes any real x will satisfy that equation
OpenStudy (anonymous):
think about what that equation is saying: "some number + 4 is equal to the same number + 4." this is always true, no matter what. it's true in the complex numbers, too.
OpenStudy (anonymous):
called an identity
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