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Kresthana
@Kresthana
August 2022
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Упростите выражение. Пожалуйста срочно
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армения20171
1)(1/2-1/(а+b)):b/a=(a+b-2)(2(a+b))*a/b=
a(a+b-2)/(2(a+b)b)
2)2/(y-1)-10(y-1):10/(y²-1)-(y+1)/(y-1)=
2/(y-1)-10/(y-1)*(y²-1)/10-(y+1)/(y-1)=
2/(y-1)-(y+1)-(y+1)/(y-1)=
(2-(y²-1)-(y+1))/(y-1)=
(2-y²+1-y-1)/(y-1)=(y²-y+2)/(y-1)
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Answers & Comments
a(a+b-2)/(2(a+b)b)
2)2/(y-1)-10(y-1):10/(y²-1)-(y+1)/(y-1)=
2/(y-1)-10/(y-1)*(y²-1)/10-(y+1)/(y-1)=
2/(y-1)-(y+1)-(y+1)/(y-1)=
(2-(y²-1)-(y+1))/(y-1)=
(2-y²+1-y-1)/(y-1)=(y²-y+2)/(y-1)