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mstossel
@mstossel
August 2021
1
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Сократите дробь, предварительно разложив числитель и знаменатель дроби на множители:
1) y + 5/y^2 + 10y + 25
2) a^2 - 4a + 4
3) n^2 - n + 1/n^3 - n^2 + n
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Answers & Comments
ЭМТЯ
1)(y + 5)/(y^2 + 10y + 25)=(y + 5)/(y + 5)^2=
1/y + 5
2)a^2 - 4a + 4/
a^2-4
=(a-2)^2
/(a-2)(a+2)=
a-2/a+2
3) (n^2 - n + 1)/(n^3 - n^2 + n)=(n^2 - n + 1)/n(n^2 - n + 1)=
1/n
6 votes
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Answers & Comments
2)a^2 - 4a + 4/a^2-4=(a-2)^2 /(a-2)(a+2)=a-2/a+2
3) (n^2 - n + 1)/(n^3 - n^2 + n)=(n^2 - n + 1)/n(n^2 - n + 1)=1/n