Asked by Karlie

hey guys, quick question

(-8 +- sqrt -20)/-6


what does this equal
Answered by Karlie
and how
Answered by Reiny
looks like the solution to a quadratic equation, which turns out to be a complex number
remember that √-1 = i , so

(-8 +- sqrt -20)/-6

= (-8 ± 2√5 i)/-6
= (4 ± √5 i)/3
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