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Suppose that f(x)=ax^3+bx^2+cx+d cubic polynomial.. Show that f(x) and k(x)=f(x-2) have the same number of roots.(without...

Suppose that f(x)=ax^3+bx^2+cx+d cubic polynomial.. Show that f(x) and k(x)=f(x-2) have the same number of roots.(without quadratic formula)

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