1. **State the problem:** Solve the quadratic equation $2x^2 + 6x = 2$ for $x$.
2. **Rewrite the equation:** Move all terms to one side to set the equation to zero:
$$2x^2 + 6x - 2 = 0$$
3. **Simplify the equation:** Divide every term by 2 to simplify:
$$\cancel{2}x^2 + \cancel{2} \cdot 3x - \cancel{2} = 0 \implies x^2 + 3x - 1 = 0$$
4. **Use the quadratic formula:** For $ax^2 + bx + c = 0$, the solutions are
$$x = \frac{-b \pm \sqrt{b^2 - 4ac}}{2a}$$
Here, $a=1$, $b=3$, and $c=-1$.
5. **Calculate the discriminant:**
$$\Delta = b^2 - 4ac = 3^2 - 4 \cdot 1 \cdot (-1) = 9 + 4 = 13$$
6. **Find the roots:**
$$x = \frac{-3 \pm \sqrt{13}}{2 \cdot 1} = \frac{-3 \pm \sqrt{13}}{2}$$
7. **Final answer:** The solutions to the equation are
$$x = \frac{-3 + \sqrt{13}}{2} \quad \text{and} \quad x = \frac{-3 - \sqrt{13}}{2}$$
Quadratic Solve 2A23Da
Step-by-step solutions with LaTeX - clean, fast, and student-friendly.