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Mathematics 6 Online
OpenStudy (anonymous):

Find the domain of the function f(x)= square root 12x+24 the square root is over the whole problem:) A. x ≤ -2 B. x ≥ -2 C. x ≤ 2 D. x ≥ 2

jimthompson5910 (jim_thompson5910):

solve \[\Large 12x + 24 \ge 0\]

jimthompson5910 (jim_thompson5910):

the idea is to force the radicand (the stuff under the square root) to be positive or 0 since you can't take the square root of a negative number

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