Answer:
B
Explanation:
Expanding the factors using FOIL
A
(x - 3)(x + 4)
= x² + 4x - 3x - 12
= x² + x - 12 ← a trinomial
(x + 3)(x - 3)
= x² - 3x + 3x - 9
= x² - 9 ← a binomial
C
(x - 3)² = (x - 3)(x - 3) = x² - 6x + 9 ← a trinomial
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