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Mathematics for IGCSE & O level - Algebraic Manipulation (Section 4 - No. 8)

What is the result of expanding (3x - 1)(2x + 5)?
6x² + 13x - 5
6x² - 13x - 5
6x² - 7x - 5
6x² + 7x - 5

설명

(3x-1)(2x+5) = 6x²+15x-2x-5=6x²+13x-5

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