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(3n - 4) ( 2n - 5)
3n^2 - 15n - 8n + 20
3n^2 - 23n+ 20
3.perkalian
(3x - 6) ( 4x - 2)
3x^2 - 6x - 24x + 12
3x^2 - 30x + 12
1.pengurangan
(3x + 6) - (7x + 8)
3x + 6 - 7x - 56
3x - 7x - 56 + 6
-4x - 50