anonymous
  • anonymous
Find the roots of the quadratic equation x2 − 8x + 8 = 0 . x1 = x2 =
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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jamiebookeater
  • jamiebookeater
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radar
  • radar
\[(-b \pm \sqrt{b ^{2}-4ac)}/2a\]
radar
  • radar
b=-8, a=1, and c=8
anonymous
  • anonymous
I prefer: \[x = \frac{-b \pm \sqrt{b^2-4ac}}{2a} \] \.[x = \frac{-b \pm \sqrt{b^2-4ac}}{2a} \]

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radar
  • radar
that's more betterr
anonymous
  • anonymous
6.828, 1.17157
radar
  • radar
Car2021, You have everything you need to solve it, including some answers that you can use as a check.
anonymous
  • anonymous
ok so if i have \[8\pm 4\sqrt{2}/2\]..how would i solve that?
radar
  • radar
You could simplify further and get \[4\pm 2\sqrt{2}\]
radar
  • radar
Solve for both roots
radar
  • radar
Use the + value for one root, then use the - for the other \[4-2\sqrt{2}\]
radar
  • radar
\[4+2\sqrt{2}\]
anonymous
  • anonymous
soo would it be 2 sqrt 2 for one and 6 sqrt 2 for the other
radar
  • radar
Almost, first solve for the 2 times the square root of 2. this should give you a value of 2.828. Now with that you will use to get the two roots. First add that to 4, that will be one root. Then use it again subtracting it from four getting the second root.
radar
  • radar
Let me know what you get.
anonymous
  • anonymous
if, ax^2 + bx + c is a quadratic equation then we can find its roots by using a formula http://upload.wikimedia.org/math/3/e/a/3ea647783b5121989cd87ca3bb558916.png now try to solve it yourself. don't just go for the solution.
radar
  • radar
He has solved it down to the point of\[4\pm 2\sqrt{2}\]
anonymous
  • anonymous
radar ..when u get done will you help me?
anonymous
  • anonymous
or chatindia..lol
radar
  • radar
Yes, would be glad too, providing I can. I am just reviewing math from the past lol
anonymous
  • anonymous
lol okay thank you! :))
radar
  • radar
Is your problem already posted laurenlynn?
anonymous
  • anonymous
yes
anonymous
  • anonymous
it's the one that says PLEASE HELP ME!!! at the top..haha
radar
  • radar
O.K. I will look for it.
radar
  • radar
Car2021, I believe you have this problem whipped, cantorset has given you the actual answers in an early post of this thread. Good luck
anonymous
  • anonymous
what's the problem you are getting in solving this question. this latex code doesn't display in my phone. i can't understand this latex codes.

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