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= 4xy^2 - 6x^2 .y
= 2xy (2y - 3x)
jawaban B
nomor 2 =
= 4 - 2(a + 3b) + 5a + 3b - 2
= 4 - 2a - 6b + 5a + 3b - 2
= 3a -3b - 2
jawaban D