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Find the smallest integral x satisfying the inequality `(x-5)/(x^(2) + 5x -14) gt 0`.

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To solve the inequality \(\frac{x-5}{x^2 + 5x - 14} > 0\), we will follow these steps: ### Step 1: Factor the Denominator First, we need to factor the quadratic expression in the denominator \(x^2 + 5x - 14\). To factor \(x^2 + 5x - 14\), we look for two numbers that multiply to \(-14\) (the constant term) and add to \(5\) (the coefficient of \(x\)). The numbers \(7\) and \(-2\) satisfy this condition. Thus, we can write: \[ x^2 + 5x - 14 = (x + 7)(x - 2) \] ### Step 2: Rewrite the Inequality Now we can rewrite the inequality: \[ \frac{x-5}{(x + 7)(x - 2)} > 0 \] ### Step 3: Identify Critical Points Next, we find the points where the expression is equal to zero or undefined. This occurs when the numerator or denominator is zero. 1. **Numerator**: \(x - 5 = 0 \Rightarrow x = 5\) 2. **Denominator**: - \(x + 7 = 0 \Rightarrow x = -7\) - \(x - 2 = 0 \Rightarrow x = 2\) So, the critical points are \(x = -7\), \(x = 2\), and \(x = 5\). ### Step 4: Test Intervals We will test the sign of the expression in the intervals defined by these critical points: - \((- \infty, -7)\) - \((-7, 2)\) - \((2, 5)\) - \((5, \infty)\) 1. **Interval \((- \infty, -7)\)**: Choose \(x = -8\) \[ \frac{-8-5}{(-8+7)(-8-2)} = \frac{-13}{(-1)(-10)} = \frac{-13}{10} < 0 \] 2. **Interval \((-7, 2)\)**: Choose \(x = 0\) \[ \frac{0-5}{(0+7)(0-2)} = \frac{-5}{(7)(-2)} = \frac{-5}{-14} > 0 \] 3. **Interval \((2, 5)\)**: Choose \(x = 3\) \[ \frac{3-5}{(3+7)(3-2)} = \frac{-2}{(10)(1)} = \frac{-2}{10} < 0 \] 4. **Interval \((5, \infty)\)**: Choose \(x = 6\) \[ \frac{6-5}{(6+7)(6-2)} = \frac{1}{(13)(4)} > 0 \] ### Step 5: Combine Results From our tests, the expression is positive in the intervals: - \((-7, 2)\) - \((5, \infty)\) ### Step 6: Determine Valid Intervals Since we are looking for values where the expression is greater than zero, we exclude the critical points where the expression is zero or undefined: - We cannot include \(x = -7\), \(x = 2\), or \(x = 5\). Thus, the solution set is: \[ (-7, 2) \cup (5, \infty) \] ### Step 7: Find the Smallest Integral Value The smallest integer in the interval \((-7, 2)\) is \(-6\). ### Final Answer The smallest integral \(x\) satisfying the inequality is: \[ \boxed{-6} \]
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