Mathematics for IGCSE & O level - Algebraic Manipulation (Section 2 - No. 42)

What are the factors of x² - 64?

(x - 8)(x - 8)

(x + 8)(x + 8)

(x + 8)(x - 8)

(x + 32)(x - 2)

解释

x² - 64 is (x+8)(x-8)

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