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OpenStudy (anonymous):
QUICK GEOMETRY QUESTION!! easy! It is asking me to simplify the number in the comment and here are my answer choices. 2 2i -2 -2i
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OpenStudy (anonymous):
\[\sqrt{-4}\]
OpenStudy (anonymous):
It needs to be i, correct? since it is a negative number under a square root?
OpenStudy (goformit100):
sqrt{-4} = sqrt{-2*2} = 2i
OpenStudy (anonymous):
Okay! thank you! may i ask, what would make the equation so that it turned out to be a negative number? like option -2i
OpenStudy (pixiedust1):
Yeah, goformit100 is correct. Always remember that two negative numbers multiplied equals a positive number.
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OpenStudy (goformit100):
x^2 + 4 = 0
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