How can i calculate this next determinant?

2 2 ... 2 2 1

2 2 ... 2 2 2

2 2 ... 3 2 2

... ... ... ...

2 n-1 ... 2 2 2

n 2 ... 2 2 2

Thanks for any help...

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- Jun 30th 2010, 02:45 PMrebeccaDeterminant calculation
How can i calculate this next determinant?

2 2 ... 2 2 1

2 2 ... 2 2 2

2 2 ... 3 2 2

... ... ... ...

2 n-1 ... 2 2 2

n 2 ... 2 2 2

Thanks for any help... - Jul 1st 2010, 12:34 PMHallsofIvy
Subtract the first row from each of the other rows. What do you get? Then expand on the second row and use the fact that subtracting a row from another does not change the determinant.