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Prove that if each element of a row (or ...

Prove that if each element of a row (or a column) of a determinant is multiplied by k, then its value gets multiplied by k.

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The correct Answer is:
`k |(a_(1),b_(1),c_(1)),(a_(2),b_(2),c_(2)),(a_(3),b_(3),c_(3))|`
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