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Verified answer
9x² - 12xy + 4y²cara :
faktor 9x² = 3x • 3x
faktor 4y² = - 2y • - 2y
jadi
9x² - 12xy + 4y²
= ( 3x - 2y)( 3x - 2y )
= ( 3x - 2y )² ( A )
3x 2y
(3x -2y)(3x - 2y)
(3x - 2y)^2
Jawaban A