anonymous
  • anonymous
3x^2-2x-5?
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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katieb
  • katieb
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anonymous
  • anonymous
Please help with quadratic formula!
anonymous
  • anonymous
solving... what are you trying to do?
anonymous
  • anonymous

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anonymous
  • anonymous
yes, solve.
.Sam.
  • .Sam.
\[x=\frac{-b \pm \sqrt{b^2-4ac}}{2a}\]
anonymous
  • anonymous
3x^2 = 2x+5 3x^2-2x-5 = 0 (3x-5) (x+1) = 0 3x-5=0, x+1=0 x=5/3 , x=-1 x=1,66, x=-1
anonymous
  • anonymous
\[3x ^{2}-2x-5\] \[3x ^{2}+3x-5x-5\] \[3x(x+1)-5(x+1)\] \[(3x-5)(x+1)\] \[x=5/3\] OR \[x=-1\]
anonymous
  • anonymous
Thank You a Sakigirl
anonymous
  • anonymous
solving... ok that are multiple ways to do this and as you continue in your education in math you will find which one you like best... in this case i recommend the quadratic formula which is |dw:1333333004991:dw| where 3x*2 -2x -5 A B C you just plug in the coefficients (numbers in front of the x) or you can factor i will use an example x^2 +2x + 1 |dw:1333333198607:dw|

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