(x² - 6x)² - 8(x² - 6x+8) - 64
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Answer:
x⁴ - 12x³ + 24x² + 48x - 128
Step-by-step explanation:
(x² - 6x)² - 8(x² - 6x+8) - 64
(a + b)² = a² + b² + 2ab
x⁴ + 36x² - 12x³ - 8x² + 48x - 64 - 64
x⁴ - 12x³ + 24x² + 48x - 128
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