SOLUTION: How to work out (-5-√-100)^2 Answer -75+100i How to get the answer without calculator

SOLUTION: How to work out (-5-√-100)^2 Answer -75+100i How to get the answer without calculator

Algebra.Com

Question 360436: How to work out (-5-√-100)^2
Answer -75+100i
How to get the answer without calculator

Answer by ankor@dixie-net.com(22740) (Show Source): You can put this solution on YOUR website!
(-5-√-100)^2
FOIL
(-5-√-100)*(-5-√-100) =
which is
= = -75 + 10i*10 = -75 + 100i

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