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$\frac{\sqrt{40\cdot9}}{\sqrt{49}}$

 Aug 11, 2022
 #1
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\(\frac{\sqrt{40\cdot9}}{\sqrt{49}}=\sqrt{\frac{2^3\cdot3^2\cdot 5}{7^2}} =\frac{2\cdot 3}{7}\cdot \sqrt{2\cdot 5}=\color{blue}\frac{6}{7}\sqrt{10}\)

laugh  !

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 Aug 11, 2022

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