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May 24, 2015

Homework Help: Math clarification Reiny

Posted by Sabrina on Saturday, September 25, 2010 at 9:32am.

This is the problem you helped me with. I was curious, do I write the solution set as (1 + i33)/2,
(1-i33)/2

change it to the standard form first

x^2 - x + 7 = 0
a=1, b=-1, c = 7

x = (1 } (1 - 4(1)(7))/2
= (1 } -27)/2

Your answer is an imaginary number or called a complex number, you could rewrite is as
x = (1 } 33 i)/2

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