Solve the quadratic formula to solve \( 9 x^{2}=12 x+2 \). \[ x= \] Simplify your answers, using square roots as needed. If there is more than 1 solution, separate the answers with a comma.
Upstudy AI Solution
Answer
Solution
Answered by UpStudy AI and reviewed by a Professional Tutor


Extra Insights
First, we rearrange the equation \( 9x^2 - 12x - 2 = 0 \). In the quadratic formula, \( x = \frac{-b \pm \sqrt{b^2 - 4ac}}{2a} \), we identify \( a = 9 \), \( b = -12 \), and \( c = -2 \). Calculating the discriminant: \[ b^2 - 4ac = (-12)^2 - 4(9)(-2) = 144 + 72 = 216. \] Next, we apply the quadratic formula: \[ x = \frac{12 \pm \sqrt{216}}{18}. \] Simplifying further: \[ \sqrt{216} = \sqrt{36 \times 6} = 6\sqrt{6}. \] Thus, \[ x = \frac{12 \pm 6\sqrt{6}}{18} = \frac{2 \pm \sqrt{6}}{3}. \] So, the solutions are: \[ x = \frac{2 + \sqrt{6}}{3}, \frac{2 - \sqrt{6}}{3}. \]