How do you solve #x(2x+7) >=0#?
2 Answers
Explanation:
Distribute
Now we need to find the critical points of the inequality!
We need to factorize this again
#x(2x+7)=0
Set factors equal to
Now we need to check the intervals between the critical points!
Thus,
The answer is:
Use the Sign Chart Method
):
Explanation:
Factor (make sure it is equal to zero) and Solve; this is already factored and equal to zero:
Pretend the inequality sign is an equal sign:
Plot these on a number line:
The two points create
Write in interval notation:
(Use brackets as the answer can be equal to)