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Mathematics for IGCSE & O level - Equations (Section 2 - No. 7)

In the expression x² - 6x + 9, what is the result of factoring?
(x+3)(x-3)
(x-3)(x-3)
(x-9)(x+1)
(x+3)(x+3)

Giải thích

Correct factorization would look like: (x-3)(x-3)

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