1. **State the problem:** Solve the quadratic equation $x^2 - 7x + 11 = 0$ and then find the integer values of $x$ that satisfy the inequality $x^2 - 7x + 11 < 0$.
2. **Recall the quadratic formula:** For an equation $ax^2 + bx + c = 0$, the solutions are given by
$$x = \frac{-b \pm \sqrt{b^2 - 4ac}}{2a}$$
where $a=1$, $b=-7$, and $c=11$.
3. **Calculate the discriminant:**
$$\Delta = b^2 - 4ac = (-7)^2 - 4 \times 1 \times 11 = 49 - 44 = 5$$
4. **Find the roots:**
$$x = \frac{-(-7) \pm \sqrt{5}}{2 \times 1} = \frac{7 \pm \sqrt{5}}{2}$$
5. **Approximate the roots:**
$$\sqrt{5} \approx 2.236$$
So,
$$x_1 = \frac{7 - 2.236}{2} = \frac{4.764}{2} = 2.382$$
$$x_2 = \frac{7 + 2.236}{2} = \frac{9.236}{2} = 4.618$$
6. **Analyze the inequality $x^2 - 7x + 11 < 0$:**
Since the parabola opens upwards ($a=1 > 0$), the quadratic is less than zero between the roots.
7. **Determine integer values satisfying the inequality:**
The inequality holds for $2.382 < x < 4.618$.
The integers in this interval are $3$ and $4$.
**Final answer:** The integer values of $x$ that satisfy $x^2 - 7x + 11 < 0$ are $3$ and $4$.
Quadratic Inequality Fa304E
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