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  • Root 80 upon root720 explain n say is it a rational number​

Root 80 upon root720 explain n say is it a rational number​

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=\frac{\sqrt{80}}{\sqrt{720}}\\ = \frac{\sqrt{80}}{\sqrt{9 \times 80}}\\ =\frac{\sqrt{80}}{3\times \sqrt{80}}\\ =\frac{1}{3}

So it is a rational number.

Posted by

Ravindra Pindel

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