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The det Delta=|[d^2+r, de, df],[ de, e^...

The det `Delta=|[d^2+r, de, df],[ de, e^2+r, ef],[ df, ef, f^2+r]|` is divisible by
(a)`r^2`
(b) `(d+e^2+f^2+r)`
(c)`(d^2+e^2+f^2+r)`
(d) `(d^2+e+f^2+r^2)`

A

`r^2`

B

`(d+e^2+f^2+r)`

C

`(d^2+e^2+f^2+r)`

D

`(d^2+e+f^2+r^2)`

Text Solution

Verified by Experts

The correct Answer is:
C
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