why does the equation x^2=-9 has no real solution? This I can't figure out.

why does the equation x^2 = 9 has two solutions? Is it because it satisfied by both 3 and -3 so it has two solutions.

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1. Whether x = 3 or -3, its square (3*3) or (-3*-3) will always be positive, not negative.

x^2 = 9, so x = 3 or -3

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posted by PsyDAG
2. Thank you so very much.

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posted by Wendy Q

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