Hi

I have this equation:

and it somehow factorises to this:

I've tried using the quadratic formula but cant get it into the form with

Would anyone be able to shed a little light on this?

Thanks

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- Feb 16th 2011, 11:00 AMeggy524Solve quadratic into complex numbers
Hi

I have this equation:

and it somehow factorises to this:

I've tried using the quadratic formula but cant get it into the form with

Would anyone be able to shed a little light on this?

Thanks - Feb 16th 2011, 11:14 AMTheEmptySet
- Feb 16th 2011, 11:36 AMHallsofIvy
When you use the quadratic formula to solve the equation you get

so that .

You can change those numbers to "polar" form but they are not anything like " " or " .

The modulus is correct:

but the argument is which is closer to 1.2 radians than to .

Did you, as TheEmptySet suggests, drop a factor of "2" from the coefficient of x? - Apr 8th 2011, 11:20 AMeggy524
Thanks guys, makes more sense now!