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 +beta+lambda+delta, then the correct statements are I : alpha and beta are real II : lambda and delta are real IIIalpha and beta are imaginary IV : lambda and delta are imaginary

Answer»

I and II
III and IV
II and III
I and IV

Answer :B


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