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Find the value of 2 sqrt(245)...

Find the value of `2 sqrt(245)`

A

`11sqrt7`

B

`13sqrt5`

C

`14sqrt5`

D

`14sqrt7`

Text Solution

Verified by Experts

The correct Answer is:
C
`2 sqrt(245) = 2 sqrt(49 xx 5)`
`= 2 xx sqrt49 xx sqrt5`
`= 2 xx 7 xx sqrt5`
`= 14 sqrt5`
Hence (c) is correct
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CALCUTTA BOOK HOUSE-QUADRATIC SURDS-Exercise -3.2
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