Mathematics for IGCSE & O level - Equations (Section 6 - No. 18)

What are the key steps when factorizing x² - 9?

Recognizing it as a difference of squares.

Applying the formula a²-b²= (a-b)(a+b).

Identifying the square roots of the terms.

Setting each factor equal to zero and solving.

The core steps for difference of squares factorization.