Question

which is greater 3 root 9 or 4 root 20

Answer 1

4 root 20

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Answer 2

3 root 9 or 4 root 20

Now, let us take 3 root 9

= root 9*3*3

= root 81 ....(i)

Now, let us take 4 root 20

= root 20*4*4

= root 160 ...(ii)

From (i) and (ii), we get

Root 160>root 81

Hence, 4 root 20>3 root 9