Quadratic Solution 71572F
1. The problem is to solve the equation $$2x^2 - 4x - 6 = 0$$ for $x$.
2. We use the quadratic formula to solve equations of the form $$ax^2 + bx + c = 0$$, which is:
$$x = \frac{-b \pm \sqrt{b^2 - 4ac}}{2a}$$
3. Identify the coefficients: $a = 2$, $b = -4$, and $c = -6$.
4. Calculate the discriminant:
$$\Delta = b^2 - 4ac = (-4)^2 - 4 \times 2 \times (-6) = 16 + 48 = 64$$
5. Since the discriminant is positive, there are two real solutions.
6. Substitute values into the quadratic formula:
$$x = \frac{-(-4) \pm \sqrt{64}}{2 \times 2} = \frac{4 \pm 8}{4}$$
7. Calculate the two solutions:
- $$x_1 = \frac{4 + 8}{4} = \frac{12}{4} = 3$$
- $$x_2 = \frac{4 - 8}{4} = \frac{-4}{4} = -1$$
8. Therefore, the solutions to the equation are $$x = 3$$ and $$x = -1$$.