Today in math I learned new concepts. However, I am unsure if these three questions are correct. This is what I did:
Solve by considering all cases. Show each solution on a number line.
Steps I did:
Therefore: -3<x<5 is a solution.
Therefore: x<-2 or 1<x<3 is a solution.
Solve using intervals.
Used quadratic equation to find the roots of
Therefore: x≤-1 or 0.4 ≤ x ≤ 3 is a solution.
Am I correct with the findings? Is what I did to solve for all cases correct?