Factorize x^2 – 9.

A(x-3)^2

B(x+3)(x-3)

C(x-3)(x-3)

D(x+9)(x-1)

Explanation

Difference of squares: a^2 – b^2 = (a-b)(a+b). x^2 – 3^2 = (x-3)(x+3).

Exam Relevance

Topic: Algebra
Subtopic: Factorization

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