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Verified answer
3x² - 5x + 7 - 2x² + 4x - 9Operasikan suku-suku dengan variabel sejenis
= x² - x - 2 (B)
Verified answer
3x² - 5x + 7 - 2x² + 4x - 9= 3x² - 2x² - 5x + 4x + 7 - 9
= x² - x - 2