Mathematics for IGCSE & O level - Algebraic Manipulation (Section 3 - No. 28)

What is the expanded form of (5x + 2)(3x - 4)?

15x² - 14x - 8

15x² - 20x - 8

15x² + 14x - 8

15x² + 2x - 8

解释

(5x+2)(3x-4)=15x²-20x+6x-8=15x²-14x-8

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