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Question

If x4+y4+z4=0, then ∣ ∣1xyyzzx1xyyzzx1∣ ∣= (where x,y,zR)

A
0
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B
x+y+z+3
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C
1
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D
xyx+2
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Solution

The correct option is C 1
Since x,y,zR
and x4+y4+z4=0
x=y=z=0

∣ ∣100010001∣ ∣=1

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