What are the solutions of the equation: 4x2−2x+2−3x−x2=0

?

Put the smaller x value in the first box. Write your answers as simplified fractions or whole numbers only.

(2 points)

x=(__) and (___)

1 answer

First, we start with the equation:

\[ 4x^2 - 2x + 2 - 3x - x^2 = 0. \]

Let's combine like terms:

  1. Combine the \(x^2\) terms: \(4x^2 - x^2 = 3x^2\).

  2. Combine the \(x\) terms: \(-2x - 3x = -5x\).

So, the equation simplifies to:

\[ 3x^2 - 5x + 2 = 0. \]

Now, we can apply the quadratic formula:

\[ x = \frac{-b \pm \sqrt{b^2 - 4ac}}{2a}, \]

where \(a = 3\), \(b = -5\), and \(c = 2\).

First, calculate the discriminant (\(b^2 - 4ac\)):

\[ b^2 = (-5)^2 = 25, \] \[ 4ac = 4 \times 3 \times 2 = 24, \] \[ b^2 - 4ac = 25 - 24 = 1. \]

Now plug the values into the quadratic formula:

\[ x = \frac{-(-5) \pm \sqrt{1}}{2 \cdot 3} = \frac{5 \pm 1}{6}. \]

This gives us two potential solutions:

  1. \(x = \frac{5 + 1}{6} = \frac{6}{6} = 1\),
  2. \(x = \frac{5 - 1}{6} = \frac{4}{6} = \frac{2}{3}\).

Thus, the solutions are:

\[ x = \frac{2}{3} \quad \text{and} \quad x = 1. \]

In simplified form, we place the smaller value first:

\[ x = \left(\frac{2}{3}\right) \text{ and } (1). \]

Final answer:

x = (\(\frac{2}{3}\)) and (1)