anonymous
  • anonymous
If 3x2 – x + 9 = 0, what are the values of x?
Algebra
  • Stacey Warren - Expert brainly.com
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SOLVED
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katieb
  • katieb
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hartnn
  • hartnn
do you know quadratic formula ?
anonymous
  • anonymous
this can help you http://www.purplemath.com/modules/quadform.htm
uri
  • uri
3x2 – x + 9 = 0 6-x+9=0 x=-9-6 x=-15

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anonymous
  • anonymous
just plug values for a b and c into equation
hartnn
  • hartnn
Compare your quadratic equation with \(ax^2+bx+c=0\) find \[a=...?\\b=...?\\c=...?\\\] \[ \\ \sqrt{(b^2-4ac)}=...?\] then the two roots of x are: \(\huge{x_{1,2}=\frac{-b \pm \sqrt{b^2-4ac}}{2a}}\)
uri
  • uri
This is a type of linear equation.
hartnn
  • hartnn
linear ? \(3x^2 \implies \) quadratic
uri
  • uri
That is 3x2 not 3^2,Isn't it? @imbreanna

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