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3x^{2}-2x-32=0
Swap sides so that all variable terms are on the left hand side.
x=\frac{-\left(-2\right)±\sqrt{\left(-2\right)^{2}-4\times 3\left(-32\right)}}{2\times 3}
This equation is in standard form: ax^{2}+bx+c=0. Substitute 3 for a, -2 for b, and -32 for c in the quadratic formula, \frac{-b±\sqrt{b^{2}-4ac}}{2a}.
x=\frac{-\left(-2\right)±\sqrt{4-4\times 3\left(-32\right)}}{2\times 3}
Square -2.
x=\frac{-\left(-2\right)±\sqrt{4-12\left(-32\right)}}{2\times 3}
Multiply -4 times 3.
x=\frac{-\left(-2\right)±\sqrt{4+384}}{2\times 3}
Multiply -12 times -32.
x=\frac{-\left(-2\right)±\sqrt{388}}{2\times 3}
Add 4 to 384.
x=\frac{-\left(-2\right)±2\sqrt{97}}{2\times 3}
Take the square root of 388.
x=\frac{2±2\sqrt{97}}{2\times 3}
The opposite of -2 is 2.
x=\frac{2±2\sqrt{97}}{6}
Multiply 2 times 3.
x=\frac{2\sqrt{97}+2}{6}
Now solve the equation x=\frac{2±2\sqrt{97}}{6} when ± is plus. Add 2 to 2\sqrt{97}.
x=\frac{\sqrt{97}+1}{3}
Divide 2+2\sqrt{97} by 6.
x=\frac{2-2\sqrt{97}}{6}
Now solve the equation x=\frac{2±2\sqrt{97}}{6} when ± is minus. Subtract 2\sqrt{97} from 2.
x=\frac{1-\sqrt{97}}{3}
Divide 2-2\sqrt{97} by 6.
x=\frac{\sqrt{97}+1}{3} x=\frac{1-\sqrt{97}}{3}
The equation is now solved.
3x^{2}-2x-32=0
Swap sides so that all variable terms are on the left hand side.
3x^{2}-2x=32
Add 32 to both sides. Anything plus zero gives itself.
\frac{3x^{2}-2x}{3}=\frac{32}{3}
Divide both sides by 3.
x^{2}-\frac{2}{3}x=\frac{32}{3}
Dividing by 3 undoes the multiplication by 3.
x^{2}-\frac{2}{3}x+\left(-\frac{1}{3}\right)^{2}=\frac{32}{3}+\left(-\frac{1}{3}\right)^{2}
Divide -\frac{2}{3}, the coefficient of the x term, by 2 to get -\frac{1}{3}. Then add the square of -\frac{1}{3} to both sides of the equation. This step makes the left hand side of the equation a perfect square.
x^{2}-\frac{2}{3}x+\frac{1}{9}=\frac{32}{3}+\frac{1}{9}
Square -\frac{1}{3} by squaring both the numerator and the denominator of the fraction.
x^{2}-\frac{2}{3}x+\frac{1}{9}=\frac{97}{9}
Add \frac{32}{3} to \frac{1}{9} by finding a common denominator and adding the numerators. Then reduce the fraction to lowest terms if possible.
\left(x-\frac{1}{3}\right)^{2}=\frac{97}{9}
Factor x^{2}-\frac{2}{3}x+\frac{1}{9}. In general, when x^{2}+bx+c is a perfect square, it can always be factored as \left(x+\frac{b}{2}\right)^{2}.
\sqrt{\left(x-\frac{1}{3}\right)^{2}}=\sqrt{\frac{97}{9}}
Take the square root of both sides of the equation.
x-\frac{1}{3}=\frac{\sqrt{97}}{3} x-\frac{1}{3}=-\frac{\sqrt{97}}{3}
Simplify.
x=\frac{\sqrt{97}+1}{3} x=\frac{1-\sqrt{97}}{3}
Add \frac{1}{3} to both sides of the equation.