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5x5=25 and -5x-5=25. The sq rt of 25 is both 5 and -5. The sq rt of -25 is imaginary Can someone explain the imaginary part and how i^2 =-1?

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  • 5x5=25 and -5x-5=25. The sq rt of 25 is both 5 and -5. The sq rt of -25 is imaginary Can someone explain the imaginary part and how i^2 =-1?


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