How do you solve $3 x^{2} - 2 x - 2 = 0$ $3x^2 - 2x - 2 = 0$ using the quadratic formula?

Question

How do you solve $3 x^{2} - 2 x - 2 = 0$ $3x^2 - 2x - 2 = 0$ using the quadratic formula?

1 Answer

Impact of this question

15543 views around the world

You can reuse this answer
Creative Commons License

Answer 1 · 2018-03-28T13:09:40

Apply the formula:
$x_{1} = \frac{- b + {(b^{2} - 4 \cdot a \cdot c)}^{\frac{1}{2}}}{2 \cdot a}$ $x_1=(-b+(b^2-4*a*c)^(1/2))/(2*a)$
$x_{2} = \frac{- b - {(b^{2} - 4 \cdot a \cdot c)}^{\frac{1}{2}}}{2 \cdot a}$ $x_2=(-b-(b^2-4*a*c)^(1/2))/(2*a)$

Explanation:

$x_{1} = \frac{- (- 2) + {({(- 2)}^{2} - 4 \cdot 3 \cdot (- 2))}^{\frac{1}{2}}}{2 \cdot 3} = \frac{1 + \sqrt 7}{3}$ $x_1=(-(-2)+((-2)^2-4*3*(-2))^(1/2))/(2*3)=(1+√7)/3$
$x_{1} = \frac{- (- 2) - {({(- 2)}^{2} - 4 \cdot 3 \cdot (- 2))}^{\frac{1}{2}}}{2 \cdot 3} = \frac{1 - \sqrt 7}{3}$ $x_1=(-(-2)-((-2)^2-4*3*(-2))^(1/2))/(2*3)=(1-√7)/3$

Science

Math

Humanities

... and beyond

How do you solve $3 x^{2} - 2 x - 2 = 0$ $3x^2 - 2x - 2 = 0$ using the quadratic formula?

1 Answer

Explanation:

Related questions

Impact of this question

Science

Math

Humanities

... and beyond

How do you solve 3x2−2x−2=03x^2 - 2x - 2 = 0 using the quadratic formula?

1 Answer

Explanation:

Related questions

Impact of this question

How do you solve $3 x^{2} - 2 x - 2 = 0$ $3x^2 - 2x - 2 = 0$ using the quadratic formula?