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Precalculus 22 Online
OpenStudy (anonymous):

Please help me, it seems straight forward but i cant quite get it...

OpenStudy (anonymous):

\[\sqrt{t+7}-\sqrt{t}\]

OpenStudy (anonymous):

Do you have any answer choices?

OpenStudy (anonymous):

I know the answer is 9, i have the key with me, but i need to solve it.

OpenStudy (anonymous):

I want to understand how it works.

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