Question

is √80/√5 a rational number​

Answer 1

Step-by-step explanation:

√80/5

√16

4

4is a rational number

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Answer 2

Answer:

$\sqrt{80} = \sqrt{5 \times 2 \times 2 \times 2 \times 2}$

$\sqrt{5} = \sqrt{1 \times 5}$

$\frac{ \sqrt{5} \times \sqrt{2} \times \sqrt{2} \times \sqrt{2} \times 2 }{ \sqrt{5} }$

$= \sqrt{2 \times 2 \times 2 \times 2 }$

$= 2 \times 2$

$= 4$

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