Solve the equation using the quadratic formula.
-$$3 x ^ { 2 } + 2 x - 1 = 0$$
A) $x = - 1$ or $x = - \frac { 1 } { 3 }$
B) $x = 1$ or $x = - \frac { 1 } { 3 }$
C) $x = 1$ or $x = \frac { 1 } { 3 }$
D) $x = - 1$ or $x = \frac { 1 } { 3 }$

Question

Quizplus · Accepted Answer

The quadratic formula is $$x = \frac{-b \pm \sqrt{b^2 - 4ac}}{2a}$$. For the equation $3x^2 + 2x - 1 = 0$, $a = 3$, $b = 2$, and $c = -1$. Plugging these into the formula gives two solutions: $x = -1$ and $x = \frac{1}{3}$.

Solve the Equation Using the Quadratic Formula 3x2+2x−1=03 x ^ { 2 } + 2 x - 1 = 03x2+2x−1=0

Solve the Equation Using the Quadratic Formula $3 x ^ { 2 } + 2 x - 1 = 0$