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(3x-1)² = (3x-1)(3x-1) = 9x - 3x -3x + 1 = 3x + 1
(4x+2)² = (4x+2)(4x+2) = 16x + 8x + 8 + 4 = 24x + 12
(5x-2)² = (5x-2)(5x-2) = 25x - 10x - 10x + 4 = 5x + 4
gini bukan yah?
klo bner jdkan jawaban terbaiknya yaaa