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Using the property of determinants and without expanding, prove that `|(2,7,65), (3,8,75), (5,9,86)|=0`

Text Solution

Verified by Experts

`L.H.S.=|{:(2,7,65),(3,8,75),(5,9,86):}|=|{:(2,7,2),(3,8,3),(5,9,5):}|`
`(C_(3)toC_(3)-9C_(2))`
=R.H.S.
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