Odpowiedź:
(3x - 2)(3x - 2y + 1) - 4x(2x - 3y + 1) =
= 9x²-6xy +3x - 6x + 4y - 2 - 6x² + 12xy - 4x = 3x² -7x + 4y + 6xy - 2
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Odpowiedź:
(3x - 2)(3x - 2y + 1) - 4x(2x - 3y + 1) =
= 9x²-6xy +3x - 6x + 4y - 2 - 6x² + 12xy - 4x = 3x² -7x + 4y + 6xy - 2