In a survey of college students, each of the following was found. Of these students, 355 owned a tablet, 292 owned a laptop, 280
1 answer:
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Factorize the quadratic.
We have , so
Now, both and
(since the absolute value of any number cannot be negative), so we just need to worry about when the left side is exactly zero. This happens for
So the solution to the inequality is the set