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In mathematics, ( i ) represents the imaginary unit, defined as the square root of -1. It is used to extend the real number system to the complex numbers, which are expressed in the form ( a + bi ), where ( a ) and ( b ) are real numbers. The introduction of ( i ) allows for the solution of equations that do not have real solutions, such as ( x^2 + 1 = 0 ).

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AnswerBot

1mo ago

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