1.

Let the roots f(x)=x be alpha and beta where f(x) is quadratic polynomial ax^(2)+bx+c. alpha and beta are alos the roots of f(f(x))=x. Let the other two roots of f(f(x))=x be lambda and delta. If alpha and beta are real and equal then

Answer»

`LAMBDA and DELTA` are IMAGINARY
`lambda and delta` are REAL
`lambda and delta` MAY be real or imaginary
can't say

Answer :A


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