The factors of a² - 9 are _____?
- (a + 3) (a - 3)
- (a + 9) (a - 9)
- (a - 3) (a - 3)
- None of these
Explanation
Using difference of squares:
a² - 9 = a² - 3² = (a+3)(a-3)
Last verified on 16-03-2026
Using difference of squares:
a² - 9 = a² - 3² = (a+3)(a-3)
Last verified on 16-03-2026
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