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- 6x⁴+ 20x³ - 6x² = -2x²(3x² - 10x + 3)
2)
a² + 2ab + b² = (a + b)²
3)
x³ - 27 = (x - 3)(x² + 3x + 9)
4)
8x⁶+ 1 = (2x² + 1)(4x⁴- 2x² + 1)