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Author Topic: quadratic equation got you down?  (Read 1286 times)

atomic7732

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quadratic equation got you down?
« on: February 13, 2013, 02:24:50 PM »
cant be factored?
last number positive?

x^2 + 8x + 65

divide b by -2

-4

square it and subtract from the last number...

49

wow it's a square!

take it's root

+/-7

tack on an i

-4 +/- 7i

magic, QED, 42

atomic, signing off
« Last Edit: February 13, 2013, 03:26:23 PM by atomic7732 »
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Darvince

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Re: quadratic equation got you down?
« Reply #1 on: February 13, 2013, 04:30:30 PM »
seems legit

-4-7i
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