Mathematics for IGCSE & O level - Algebraic Manipulation (Section 2 - No. 14)

Which expression is the result of a difference of squares factorization?

x² + 2x + 1

x² - 4

x² + 4

x² + 6x + 9

הֶסבֵּר

A difference of squares results in (a+b)(a-b).

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