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show that :I b^2+c^2 a^2 a^2 I I b^2 c^2+a^2 b^2 I I c^2 c^2 a^2+b^2 I =4a^2b^2c^2 where I ... I is a sign of determinant

Mathematics
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can we do something like R1-R2-R3
|dw:1332770725462:dw|
question is something like |dw:1332771115290:dw|

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Other answers:

does the determinant look like this ?!
1 Attachment
yes
i think after R1-R2-R3 we can take -2 common from R1 then R2-R1 and again R3-R1
i can't go further after this so do you have any idea?
No, not yet
now i got it
|dw:1332772038295:dw|
but i still want you to check out for me
i don"t think my process is right
i solved it
1) R1+R3 2) R1-R2 3) take 2 as a common factor from R1 4) R3-R1 5)R2-R3 "you will find 3 Zero's in the determinant" 6) find the value of the final determinant and you'll get the answer

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