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Mathematics 14 Online
OpenStudy (anonymous):

Ok, I need help figuring out, (-7 + sqrt-5) ^2. I know it's re-written as (-7 + sqrt -5) (-7 + sqrt -5). Do I use FOIL to figure this out?

OpenStudy (kinggeorge):

FOIL would be an excellent strategy in this case.

OpenStudy (anonymous):

Yes, but rewrite it. sqrt -5 means imaginary..

OpenStudy (anonymous):

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