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The determinant Delta=|(a,a+b,a+2b),(a+2...

The determinant `Delta=|(a,a+b,a+2b),(a+2b,a,a+b),(a+b,a+2b,a)|=`

A

`9b^(2)(a+b)`

B

`9a^(2)(a+b)`

C

`9(a+b)^(3)`

D

`9ab(a+b)`

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The correct Answer is:
A
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