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Simplify this imaginary number; sqr -8?
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1 vote
Simplify this imaginary number; sqr -8?

User Don Spaulding
by
7.8k points

1 Answer

4 votes
remember
i=√-1
i²=-1
√(ab)=(√a)(√8)


so

√-8=(√-1)(√8)=(i)(√2*2*2)=i(2√2)=2i√2
User Neoevoke
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