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Use the quadratic formula to solve. Express your answer in simplest form.

[tex]\[ -v^2 + 5v + 6 = -2v^2 \][/tex]


Sagot :

Absolutely! Let's solve the given quadratic equation step-by-step.

The equation provided is:
[tex]\[ -v^2 + 5v + 6 = -2v^2 \][/tex]

To solve this, we first need to move all the terms to one side to set the equation equal to zero. We'll start by adding [tex]\(2v^2\)[/tex] to both sides:

[tex]\[ -v^2 + 5v + 6 + 2v^2 = -2v^2 + 2v^2 \][/tex]

This simplifies to:

[tex]\[ v^2 + 5v + 6 = 0 \][/tex]

Now, we have a standard quadratic equation in the form [tex]\(av^2 + bv + c = 0\)[/tex], where [tex]\(a = 1\)[/tex], [tex]\(b = 5\)[/tex], and [tex]\(c = 6\)[/tex].

Next, we use the quadratic formula to solve for [tex]\(v\)[/tex]. The quadratic formula is given by:

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

First, we calculate the discriminant, [tex]\(b^2 - 4ac\)[/tex]:

[tex]\[ b^2 - 4ac = 5^2 - 4 \cdot 1 \cdot 6 = 25 - 24 = 1 \][/tex]

Now that we have the discriminant, we substitute back into the quadratic formula:

[tex]\[ v = \frac{-b \pm \sqrt{b^2 - 4ac}}{2a} = \frac{-5 \pm \sqrt{1}}{2 \cdot 1} = \frac{-5 \pm 1}{2} \][/tex]

This gives us two possible solutions:

1. When we use the positive root:

[tex]\[ v = \frac{-5 + 1}{2} = \frac{-4}{2} = -2 \][/tex]

2. When we use the negative root:

[tex]\[ v = \frac{-5 - 1}{2} = \frac{-6}{2} = -3 \][/tex]

Therefore, the solutions to the quadratic equation are:

[tex]\[ v = -2 \quad \text{and} \quad v = -3 \][/tex]

So, the values of [tex]\(v\)[/tex] that satisfy the equation [tex]\( -v^2 + 5v + 6 = -2v^2 \)[/tex] are [tex]\(v = -2\)[/tex] and [tex]\(v = -3\)[/tex].