Question 414479
solve the following inequalities.
f(x)=(x-5)(2x+7)<0

..
Critical points
x-5=0
x=5
2x+7=0
x=-7/2
Show critical points on number line.
For x>=5, f(x)>=0
For x<=-7/2, f(x)>=0
For -7/2< x <5, f(x)<0
Given problem states that f(x) must be <0
Solution:(-7/2,5)