Answer:
D. 9x²-4
Explanation:
( 3x + 2 ) ( 3x - 2 )
3x * 3x = 9x^2
3x * -2 = -6x
2 * 3x = 6x
2 * -2 = -4
9x^2 - 6x + 6x - 4
9x^2 - 4
D
(3x + 2)(3x - 2)
each term in the second factor is multiplied by each term in the first factor
3x(3x - 2) + 2(3x - 2) ← distribute parenthesis
= 9x² - 6x + 6x - 4 ← collect like terms
= 9x² - 4
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