Q. Solve for x.(x−2)(x−3)>0Write a compound inequality like 1<x<3 or like x<1 or x>3.
Find Zeros: Find the zeros of the quadratic expression (x−2)(x−3).(x−2)=0 gives x=2.(x−3)=0 gives x=3.Critical points are 2 and 3.
Determine Intervals: Determine the intervals to test using the critical points.The intervals are (−∞,2), (2,3), and (3,∞).
Test Interval (−∞,2): Test the interval (−∞,2) by picking a number less than 2, say x=0.(0−2)(0−3)=(2)(3)=6, which is < 0. So, (x - 2)(x - 3) > 0 for x in (−∞,2).
Test Interval (2,3): Test the interval (2,3) by picking a number between 2 and 3, say x=2.5.(2.5−2)(2.5−3)=(0.5)(−0.5)=−0.25, which is < 0. So, (x−2)(x−3) is not > 0 for x in (2,3).
Test Interval (3,∞):</b>Testtheinterval$(3,∞) by picking a number greater than 3, say x=4.(4−2)(4−3)=(2)(1)=2, which is > 0.So, (x - 2)(x - 3) > 0 for x in (3,∞).
Combine Intervals: Combine the intervals where (x - 2)(x - 3) > 0. The solution is x in (−∞,2) or (3,∞).