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Mathematics for IGCSE & O level - Algebraic Manipulation (Section 4 - No. 40)

Which expression, when factored, would result in (x - 5)(x + 2)?
x² + 3x + 10
x² - 3x - 10
x² + 7x - 10
x² - 7x - 10

解释

(x - 5)(x + 2) = x² - 3x - 10

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