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July 2022
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Помогите пожалуйста)до 16 фераля))0)Дам 50 баллов! *Числовое значение рационального выражения*
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sedinalana
Verified answer
1
12/(x-2)(x+2)+3/(x+2)=(12+3x-6)/(x+2)(x-2)=3(x+2)/(x+2)(x-2)=3/(x-2)=
=3/(2002-2)=3/2000
2
x²/(x+1)²-(x-1)/(x+1)=(x²-x²+1)/(x+1)²=1/(x+1)²=1/(19+1)²=1/400
3
(a-b)(a²+ab+b²)/(a²+ab+b²)+(a+b)(a²-ab+b²)/(a²-ab+b²)=a-b+a+b=2a=
=2*0,05=0,1
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Answers & Comments
Verified answer
112/(x-2)(x+2)+3/(x+2)=(12+3x-6)/(x+2)(x-2)=3(x+2)/(x+2)(x-2)=3/(x-2)=
=3/(2002-2)=3/2000
2
x²/(x+1)²-(x-1)/(x+1)=(x²-x²+1)/(x+1)²=1/(x+1)²=1/(19+1)²=1/400
3
(a-b)(a²+ab+b²)/(a²+ab+b²)+(a+b)(a²-ab+b²)/(a²-ab+b²)=a-b+a+b=2a=
=2*0,05=0,1