anonymous
  • anonymous
~I will fan and medal~ Part B: Solve 9x2 + 3x − 2 = 0 by using an appropriate method. Show the steps of your work, and explain why you chose the method used. (5 points) Please answer ASAP!
Mathematics
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anonymous
  • anonymous
~I will fan and medal~ Part B: Solve 9x2 + 3x − 2 = 0 by using an appropriate method. Show the steps of your work, and explain why you chose the method used. (5 points) Please answer ASAP!
Mathematics
jamiebookeater
  • jamiebookeater
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DanJS
  • DanJS
Cant go wrong always using the quadratic formula
DanJS
  • DanJS
i would try to factor it first before that though...
anonymous
  • anonymous
True.. I'll try that. @DanJS

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DanJS
  • DanJS
9 1 2 1 3 3 i think you can make that +3 in the middle from those
DanJS
  • DanJS
3*2 - 3*1
DanJS
  • DanJS
Or just use the quadratic formula,, reason: always works.. :)
anonymous
  • anonymous
When I used the quadratic formula, I got 0.3333333~ and -0.66666666666667..
anonymous
  • anonymous
DanJS
  • DanJS
hmm... real fast by factoring first \[9x^2+3x-2 = (3x - 1)*(3x+2) = 0\]
DanJS
  • DanJS
so either of those quantities in ( ) can be zero to be true 3x - 1 = 0 or 3x + 2 = 0
DanJS
  • DanJS
so you have it right, just decimal form
DanJS
  • DanJS
x = + 1/3 or x = - 2/3 i would leave it like that
anonymous
  • anonymous
Alright, I got it now. Thanks for the help!
DanJS
  • DanJS
welcome, anytime

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