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OpenStudy (anonymous):
Is this right? Operations with radical expressions.
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OpenStudy (anonymous):
\[3\sqrt{45} - 8\sqrt{20}\] This is the problem.
OpenStudy (anonymous):
\[3\sqrt{45}=9\sqrt{5} and 8\sqrt{20}=16\sqrt{5}\ Simplified.
OpenStudy (anonymous):
Woudl I subtract the numbers like (9-16)?
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