Answer:
4x^2−4x−1
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4x² - 4x - 1
Step-by-step explanation:
Given
4(x² - 2x) + (x - 1)(x² + x + 1) - x(x² - 4) ← distribute all parenthesis
= 4x² - 8x +x ³ + x² + x - x² - x - 1 - x³ + 4x ← collect like terms
= 4x² - 4x - 1
