Odpowiedź:
(18y + 6x)(x + 3y + 2)- (9y +3.2)(2x + 6y)- 12 (x - 3y)= (18yx+54x²+36y+6x²+18xy+12x) - (18yx+54y²+6,4x+19,2y) - (12x-36y)= 36xy+50x²+36y+12x -18xy -54y²-6,4x-19,2y-12x-36y= 18xy+50x²-54y²-6,4x-19,2y
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Odpowiedź:
(18y + 6x)(x + 3y + 2)- (9y +3.2)(2x + 6y)- 12 (x - 3y)= (18yx+54x²+36y+6x²+18xy+12x) - (18yx+54y²+6,4x+19,2y) - (12x-36y)= 36xy+50x²+36y+12x -18xy -54y²-6,4x-19,2y-12x-36y= 18xy+50x²-54y²-6,4x-19,2y