Find Critical Points: Find the critical points of (x+2)/(x−5). The critical points are where the numerator equals zero or the denominator equals zero, since these are the points where the expression could change sign. Numerator: x+2=0 implies x=−2. Denominator: x−5=0 implies x=5. Critical points: −2,5
Determine Intervals: Determine the intervals using the critical points. The critical points divide the number line into three intervals. Intervals: (−∞,−2), (−2,5), (5,∞)
Test Sign: Test the sign of (x+2)/(x−5) in each interval.Choose a test point from each interval and substitute it into the inequality to determine the sign of the expression in that interval.Interval (−∞,−2): Choose x=−3.Sign of (x+2)/(x−5) when x=−3: (−3+2)/(−3−5)=(−1)/(−8)=+The expression is positive in this interval.Interval (−2,5): Choose x=0.Sign of (x+2)/(x−5) when x=0: (−∞,−2)0The expression is negative in this interval.Interval (−∞,−2)1: Choose (−∞,−2)2.Sign of (x+2)/(x−5) when (−∞,−2)2: (−∞,−2)5The expression is positive in this interval.
Write Solution: Write the solution as a compound inequality.Since we are looking for where (x+2)/(x−5)≥0, we want the intervals where the expression is positive or zero.The expression is positive in (−∞,−2) and (5,∞). It is zero when x=−2.Therefore, the solution is x≤−2 or x≥5.