Posted by Kiley on Monday, November 3, 2008 at 6:17pm.
solve the equation:
is 1+9i/2 the correct answer?
Algebra 2 - DanH, Monday, November 3, 2008 at 6:45pm
No, that is not the answer I get when I plug in to the quadratic formula.
(1 + sqrt7i)/2
(1 - sqrt7i)/2
Do you understand how I got this?
Algebra 2 - DanH, Monday, November 3, 2008 at 7:01pm
sqrt(b^2 - 4ac).
b is -1 and a is 1 and c is 2.
So, sqrt(b^2 - 4ac) is
sqrt(-7), or (sqrt7)i.
Algebra 2 - Kiley, Monday, November 3, 2008 at 7:09pm
ohhhh! okay thank you!
Algebra 2 - DanH, Monday, November 3, 2008 at 7:13pm
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