Question

9x2-4.
$9x2 - 4$
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Answer 1

Answer:

$9 {x}^{2} - 4 \\ ( {3x)}^{2} - {2}^{2} \\ (3x + 2) \times (3x - 2)$

Answer 2

Answer:

$(3x + 2)(3x - 2)$