Mathematics for IGCSE & O level - Algebraic Manipulation (Section 3 - No. 6)

What is the result of factorizing x² - 16?

(x + 4)(x - 4)

(x - 4)(x - 4)

(x + 8)(x - 2)

(x - 8)(x + 2)

Giải thích

x² - 16 = (x+4)(x-4)

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