Ответ: 1) 6 2) 12
Объяснение:
1) *
1/(2n^2+1) * (6n^2 +n +18n +3 +6n^2 -n -18n +3)
1/(2n^2+1) * (12n^2 +6)
1/(2n^2+1) * 6(2n^2+1)
6
2) *
*
(12x^2 + 12y^2) * 1/(x^2 + y^2)
12(x^2 + y^2 ) * 1/(x^2 + y^2)
12
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Answers & Comments
Ответ: 1) 6 2) 12
Объяснение:
1)
* 
1/(2n^2+1) * (6n^2 +n +18n +3 +6n^2 -n -18n +3)
1/(2n^2+1) * (12n^2 +6)
1/(2n^2+1) * 6(2n^2+1)
6
2)
* 
(12x^2 + 12y^2) * 1/(x^2 + y^2)
12(x^2 + y^2 ) * 1/(x^2 + y^2)
12