Djamila is looking for conjugate pair solutions to the equation 3x2−5x=−6 . Which of the following options should she choose?(1 point)

1 answer

To find conjugate pair solutions for the equation \( 3x^2 - 5x = -6 \), we first rewrite the equation in standard form:

\[ 3x^2 - 5x + 6 = 0 \]

Next, we can check if the solutions are conjugate pairs by calculating the discriminant \( D \), which is given by the formula:

\[ D = b^2 - 4ac \]

In our quadratic equation, \( a = 3 \), \( b = -5 \), and \( c = 6 \).

Let's calculate the discriminant:

\[ D = (-5)^2 - 4(3)(6) = 25 - 72 = -47 \]

Since the discriminant is negative (\( D < 0 \)), this means that the quadratic equation has two complex conjugate solutions.

To find the solutions, we use the quadratic formula:

\[ x = \frac{-b \pm \sqrt{D}}{2a} \]

Inserting the values:

\[ x = \frac{-(-5) \pm \sqrt{-47}}{2(3)} = \frac{5 \pm i\sqrt{47}}{6} \]

Thus, the solutions are:

\[ x_1 = \frac{5 + i\sqrt{47}}{6} \quad \text{and} \quad x_2 = \frac{5 - i\sqrt{47}}{6} \]

These solutions are indeed a conjugate pair.

Based on this analysis, Djamila should choose the option that indicates the existence of complex conjugate solutions. If you need specific options to choose from, please provide them!