1.

The result of subtraction of `sqrt5` from `sqrt(125)` isA. `sqrt80`B. `sqrt(120)`C. `sqrt(100)`D. None of these

Answer» Correct Answer - A
The subtraction `= sqrt(125) - sqrt5`
`= sqrt(25 xx 5) - sqrt5 = 5 sqrt5 - sqrt5`
`=4 sqrt5 = sqrt(16 xx 5) = sqrt80`
`:.` (a) is correct


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