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What is −220−−√−125−−−√ in simplest radical form?
4 months ago
Q:
What is −220−−√−125−−−√ in simplest radical form?
Accepted Solution
A:
[tex]-2 \sqrt{20} - \sqrt{125} =-2 \sqrt{4\times5} -\sqrt{25\times5} \\ \\ =-4\sqrt{5}-5\sqrt{5}=-9\sqrt{5} \\ \\ \therefore -2 \sqrt{20} - \sqrt{125}=-9\sqrt{5}[/tex]