Mathematics for IGCSE & O level - Algebraic Manipulation (Section 1 - No. 3)

What is the factored form of x² - 10x + 25?

(x + 5)(x - 5)

(x - 5)²

(x + 5)²

(x - 25)(x + 1)

解释

x² - 10x + 25 = (x-5)(x-5) = (x-5)²

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