Solve the equation.

3(2x-1) 1/2 (4x - 2) +2

1 answer

To solve the equation \( 3(2x - 1) \frac{1}{2} (4x - 2) + 2 = 0 \), let's first clarify the format of the equation.

It seems there might be some confusion regarding the placement of the \( \frac{1}{2} \). I will interpret the expression as:

\[ 3(2x - 1) \cdot \frac{1}{2}(4x - 2) + 2 = 0 \]

Now let's simplify it step-by-step.

  1. Distribute the terms inside \( \frac{1}{2}(4x - 2) \):

    \[ \frac{1}{2}(4x - 2) = \frac{4x}{2} - \frac{2}{2} = 2x - 1 \]

  2. Now substitute this back into the equation:

    \[ 3(2x - 1)(2x - 1) + 2 = 0 \]

  3. Expand \( 3(2x - 1)(2x - 1) \):

    \[ (2x - 1)(2x - 1) = (2x - 1)^2 = 4x^2 - 4x + 1 \]

    Therefore,

    \[ 3(4x^2 - 4x + 1) = 12x^2 - 12x + 3 \]

  4. Substituting this back gives:

    \[ 12x^2 - 12x + 3 + 2 = 0 \]

    Which simplifies to:

    \[ 12x^2 - 12x + 5 = 0 \]

  5. Now, apply the quadratic formula:

    The quadratic formula is:

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

    where \(a = 12\), \(b = -12\), and \(c = 5\).

    • Calculate the discriminant:

    \[ b^2 - 4ac = (-12)^2 - 4 \cdot 12 \cdot 5 = 144 - 240 = -96 \]

    Since the discriminant is negative (\(-96\)), there are no real solutions.

  6. Thus, the final answer is:

The equation \( 3(2x - 1) \cdot \frac{1}{2}(4x - 2) + 2 = 0 \) has no real solutions. The solutions are complex numbers:

\[ x = \frac{12 \pm \sqrt{-96}}{24} = \frac{12 \pm 4i\sqrt{6}}{24} = \frac{1 \pm \frac{i\sqrt{6}}{6}}{2} = \frac{1}{2} \pm \frac{i\sqrt{6}}{12} \]

So the complex solutions can be expressed as:

\[ x = \frac{1}{2} + \frac{i\sqrt{6}}{12}, \quad \frac{1}{2} - \frac{i\sqrt{6}}{12} \]

That's your answer!