Question 1121754
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The expression under the square root must be non-negative


3x + 5 >= 0,   or


3x >= -5,    which implies


x >= {{{-5/3}}}.


<U>Answer</U>.  The domain is the set  { x >= {{{-5/3}}} },   or in the interval notation,  [{{{-5/3}}},{{{infinity}}}).
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Solved.