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Mathematics 21 Online
OpenStudy (anonymous):

help please.

OpenStudy (anonymous):

OpenStudy (anonymous):

you need to realize you can't take the square root of a negative number, therefore the smallest thing under the square root you can have is 0. so you need to solve for 6(x)+42=0, which is -7. so all x values must be bigger than or equal to -7.

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