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OpenStudy (anonymous):
I got marked off on this question on my math test for not simplifying the radical in my final step of the problem. So how would I simplify this more? x=2+-sqrt-8
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OpenStudy (cwrw238):
sqrt8 = sqrt4*sqrt2 = 2 sqrt2 sqrt -8 = 2i sqrt2 2+-sqrt-8 = 2 +/- 2i sqrt2 you can also factor this ti get 2(1 +/- sqrt2)
OpenStudy (cwrw238):
* thats 2(1 +/- i sqrt2)
OpenStudy (anonymous):
Ohhh I see, thanks!
OpenStudy (cwrw238):
yw
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