Simplify the expression .

MATHEMATICS · Single correct · AoPS · Mathematics · x Marks the Spot · x Marks the Spot

Problem

Simplify the expression [(4x3−3x2+x)−{2x3−(x2−5x)+4}]−(x3−2x2+3x−1)\big[(4x^3 - 3x^2 + x) - \{2x^3 - (x^2 - 5x) + 4\}\big] - (x^3 - 2x^2 + 3x - 1). (a) x3+7x−3x^3 + 7x - 3 (b) x3+3x−3x^3 + 3x - 3 (c) x3−7x−3x^3 - 7x - 3 (d) x3−7x+3x^3 - 7x + 3

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