Приведи дроби t2 / t^2−y^2 и t−y / 9t+9y к общему знаменателю.

Выбери правильный вариант(ы) ответа:

1) 9t^2 / 9(t+y)(t−y)  и t^2−y^2 / 9(t+y)(t−y)

2) другой ответ

3) 9t^2 / 9(t^2−y^2)  и t^2−2ty+y^2 / 9(t^2−y^2)

4) 9t^2 / 9(t+y)(t−y)  и t^2−2ty−y^2 / 9(t+y)(t−y)

5) 9t^2 / 9(t+y)(t−y)  и t^2−2ty+y^2 / 9(t+y)(t−y)

6) 9t^2 / 9t^2−9y^2  и t^2−y^2 / 9t^2−9y^2

7) 9t^2 / t^2−y^2  и t^2−2ty+y^2 / t^2−y^2
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