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B. -4x² - 6x + 8
caranya adalah
-2(2x² + 3x - 4 )
-2 × 2x² = - 4x²
-2 × 3x = - 6x
-2 × -4 = 8
Jadi -4x² - 6x + 8 selesaii... ^_^ semoga membantu