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If f(x) is a polynomial of degree <3, pr...

If `f(x)` is a polynomial of degree `<3,` prove that `|1af(a)//(x-a)1bf(b)//(x-b)1cf(c)//(x-c)|-:|1a a^2 1bb^2 1cc^2|=(f(x))/((x-a)(x-b)(x-c))`

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