Ответ: (9x+1)/(9x-1);
Объяснение:
1) 30x^4y / 12x^4y^3=5/(2y^2);
2) (81x^2+18x+1)/(81*x^2-1) =(9x+1)^2/(9x-1)(9x+1)=(9x+1)/(9x-1);
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Ответ: (9x+1)/(9x-1);
Объяснение:
1) 30x^4y / 12x^4y^3=5/(2y^2);
2) (81x^2+18x+1)/(81*x^2-1) =(9x+1)^2/(9x-1)(9x+1)=(9x+1)/(9x-1);