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Mathematics 20 Online
OpenStudy (anonymous):

solve x^2 + 2^2 = 0

OpenStudy (anonymous):

x^2=-4 so it doesnt have any answer

OpenStudy (anonymous):

so would i leave it x^2=-4?

geerky42 (geerky42):

\(x = \sqrt{-4} = 2i\)

OpenStudy (anonymous):

i put x = +/- 2 and got it wrong

OpenStudy (anonymous):

@geerky42 thanks, now i remember it

OpenStudy (anonymous):

yes ofcourse in real world of number else it has answer in complex world in this way 2i and -2i

geerky42 (geerky42):

Ah, and -2i. I forgot about plus/minus, lol.

geerky42 (geerky42):

glad we helped, though.

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