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c(x-a)(x-b)/(c-a)(cb)+a(x-b)(x-c)/(a-b)(a-c)+b(x-c)(x-a)/(b-c)(b-a)+1 HOMC17.4

Source:

September 9, 2019
algebrapolynomial

Problem Statement

Let a,b,c be three distinct positive numbers. Consider the quadratic polynomial P(x)=c(xa)(xb)(ca)(cb)+a(xb)(xc)(ab)(ac)+b(xc)(xa)(bc)(ba)+1P (x) =\frac{c(x - a)(x - b)}{(c -a)(c -b)}+\frac{a(x - b)(x - c)}{(a - b)(a - c)}+\frac{b(x -c)(x - a)}{(b - c)(b - a)}+ 1. The value of P(2017)P (2017) is
(A): 20152015 (B): 20162016 (C): 20172017 (D): 20182018 (E): None of the above.