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Mathematics for IGCSE & O level - Algebraic Manipulation (Section 3 - No. 18)
What is the factored form of x² - 16?
(x - 4)(x - 4)
(x + 4)(x + 4)
(x - 8)(x + 2)
(x - 4)(x + 4)
Forklaring
This is a difference of squares, which factors to (x-4)(x+4).
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