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16-07-2018
Mathematics

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PLEASE HELP...
Evaluate 5 squareroot of 2 + squareroot of 18

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jdoe0001 jdoe0001

16-07-2018

[tex] \bf 5\sqrt{2}+\sqrt{18}\qquad
\begin{cases}
18=2\cdot 3\cdot 3\\
\qquad 2\cdot 3^2
\end{cases}\implies 5\sqrt{2}+\sqrt{2\cdot 3^2}
\\\\\\
5\sqrt{2}+3\sqrt{2}\implies 8\sqrt{2} [/tex]

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