anonymous
  • anonymous
u^2+2u-2=0 solve
Mathematics
katieb
  • katieb
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bahrom7893
  • bahrom7893
factor or use the quadratic
anonymous
  • anonymous
yes
bahrom7893
  • bahrom7893
I'm telling you to do it lol

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anonymous
  • anonymous
ok well i wouldnt be asking for help if ik what to do
bahrom7893
  • bahrom7893
http://www.wolframalpha.com/input/?i=factor%28u%5E2%2B2u-2%29
anonymous
  • anonymous
DO you know quadratic formula?
anonymous
  • anonymous
yes but i get confused on where to put my numbers in at
anonymous
  • anonymous
\[\Large u=\frac{-b \pm \sqrt{b^{2}-4ac}}{2a}\] here b(coeffi. of u)=2 a(coeffi. of u^2)=1 c = -2 substitute.
anonymous
  • anonymous
ok u=-2+-squreroot 2*-4*1*2 is this right
anonymous
  • anonymous
\[\Large u=\frac{-2 \pm \sqrt{2^{2}-4(1)(-2)}}{2(1)}\]
anonymous
  • anonymous
ok now idk were to go frm here
anonymous
  • anonymous
u=-2+-sqrt2^2+8
anonymous
  • anonymous
i am sorry this whole thing is very confusing to me

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