If a^2+b^2+c^2=-2a n df(x)= |[1+a^2x,(1...

If `a^2+b^2+c^2=-2a n df(x)=` `|[1+a^2x,(1+b^2)x,(1+c^2)x],[(1+a^2)x,1+b^2x,(1+c^2)x],[(1+a^2)x,(1+b^2)x,1+c^2x]|` , then `f(x)` is a polynomial of degree `0` b. `1` c. `2` d. `3`

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