The inequality is
.
The radicand of a square root must be greater than or equal t zero,
\the first solve 

.............(1)
Now solve 
(Subtract 2 from each side)
(Simplify)
(Subtract:
)
(Squaring on each side)
(Simplify)
(Add 6 from each side)
(Simplify)
(Divide each side by 3)
............(2) (Simplify)
From (1) and (2)
\
Some x-values to confirm the solution.
\| \
x = - 2 \ | \
\
x = 1 \ | \
\
x = 10 \ | \
| \
f(-2) = =
| \
\
f(1) = \ , the inequality is satisified. | \
\
f(10) = =
| \
The solution is check.The interval
satisify the inequality.
graph for the interval
satisify the inequality.

The solution is check.The interval
satisify the inequality.