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Mathematics 11 Online
UsArmy3947:

Solve: x^2 = 25

UsArmy3947:

sorry that 25 needs a negative sign... so it should be x^2 = -25

UsArmy3947:

my answer is x = 5i, -5i

UsArmy3947:

is that right?

Hero:

Looks good to me. You can always check by multiplying (5i)(5i) and (-5i)(-5i). The result of both multiplications should be -25.

UsArmy3947:

Thank you ^.^

UsArmy3947:

Can you help me with the other questions I asked previously?

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