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anonymous
 5 years ago
I'm stuck on this problem can someone tell
me if this is right so far?
(a)find the discriminant: (b)classify the root(s) as 2real (uneaqual) roots, 1 (double) root, or
2 imaginary conjungate roots: (c)find the roots
x^22x=5 my answer x=1+2i,12i
anonymous
 5 years ago
I'm stuck on this problem can someone tell me if this is right so far? (a)find the discriminant: (b)classify the root(s) as 2real (uneaqual) roots, 1 (double) root, or 2 imaginary conjungate roots: (c)find the roots x^22x=5 my answer x=1+2i,12i

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anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0discriminant is \[b^24ac\] in your case a = 1, b = 2 and c = 5 because first you have to write \[x^22x+5=0\] to identify a, b and c. so you get \[(2)^24\times 5=420=16\] since this is negative it means you have two imaginary roots. \[x^22x=5\] \[(x1)^2=5+1=4\] \[x1=\pm \sqrt{1}=\pm 2i\] \[x=1\pm 2i\] you got it.

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0typo above. i meant \[x1=\pm \sqrt{4}=\pm 2i\]
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