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Mathematics 11 Online
OpenStudy (anonymous):

does the equation x+4=x+4 have more than one real number solution?

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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