Find the coefficient of in the simplified form of .

MATHEMATICS · Single correct · AoPS · Mathematics · Polynomials · Polynomials

Problem

Find the coefficient of x3x^3 in the simplified form of 2x(x2−3x+1)−(x−2)(x2+2x)2x(x^2-3x+1)-(x-2)(x^2+2x). (a) 33 (b) 22 (c) 11 (d) −1-1

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