anonymous
  • anonymous
Quadratic equations????? I tried to solve it but I came out with something completely different. Solve 6x2 = 12x − 24. the quantity of negative 2 plus or minus 3i square root 2 all over 2 1 plus or minus i square root 3 the quantity of 2 plus or minus 3i square root 2 all over 2 1 plus or minus 2i square root 10
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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jamiebookeater
  • jamiebookeater
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anonymous
  • anonymous
All terms have a common factor of 6, so divide all terms by 6.
Vocaloid
  • Vocaloid
start by rewriting it in the form ax^2 + bx + c = 0 6x^2 - 12x + 24 = 0 then apply the quadratic formula
Vocaloid
  • Vocaloid
(you can factor out 6)

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anonymous
  • anonymous
Ohhhh I did it the opposite way by subtracting 6x^2 from both sides
anonymous
  • anonymous
Doesn't make any difference, you will still get the correct answer.
Vocaloid
  • Vocaloid
that should work too, you must have made an algebra mistake somewhere
anonymous
  • anonymous
So x^2-2x-4 = 0?
anonymous
  • anonymous
Should be +4
anonymous
  • anonymous
Then just apply the equation?
Vocaloid
  • Vocaloid
yes
anonymous
  • anonymous
Yup
anonymous
  • anonymous
Oh right sorry +4
anonymous
  • anonymous
Thank you!
anonymous
  • anonymous
You're welcome
anonymous
  • anonymous
I got to here but I'm a little stuck.|dw:1446781602483:dw|
anonymous
  • anonymous
I think your supposed to use the one thing with the i (I can't remember the name of it) to get rid of the negative in the \[\sqrt{-12}\]
anonymous
  • anonymous
@Vocaloid
anonymous
  • anonymous
-2^2 - 4(1)(4)?
Vocaloid
  • Vocaloid
oops nvm
Vocaloid
  • Vocaloid
to simplify sqrt(-12), first change it to i*sqrt(12) then simplify as you normally would
Vocaloid
  • Vocaloid
|dw:1446782995873:dw|
anonymous
  • anonymous
Yeah I got that. My answer was |dw:1446783079855:dw|
Vocaloid
  • Vocaloid
just a sec, you made a small error in the quadratic fomula
Vocaloid
  • Vocaloid
|dw:1446783245750:dw|
Vocaloid
  • Vocaloid
-b = 2, not 4
Vocaloid
  • Vocaloid
your equation is x^2 - 2x + 4 so a = 1, b = -2, c = 4
anonymous
  • anonymous
Ohhhhhh that makes so much sense! Thank you so much I never would have caught that.
Vocaloid
  • Vocaloid
no prob
anonymous
  • anonymous
So then it would be the second answer choice?
Vocaloid
  • Vocaloid
so your final answer should be|dw:1446783365790:dw|
Vocaloid
  • Vocaloid
yeah!

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