1.

Matrix A=[(a,-b,0),(c,0,b),(0,-c,-a)] then :

Answer»

`A^9=(a^2-2bc)^3A`
`A^9=(a^2-2bc)^4A`
`|A^2+(2bc-a^2)I_3|=0`
`|A^2+(a^2-2bc)I_3|=0`

ANSWER :B::C


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