How do you solve #x(2x+7) >=0#?
Now we need to find the critical points of the inequality!
We need to factorize this again
Set factors equal to
Now we need to check the intervals between the critical points!
The answer is:
Use the Sign Chart Method
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)