Ответ:
1. 1) (3-p)(3+p)/3(p+3)*p²/(3-p)²=p²/3(3-p)
2) p²/3(3-p)-p/(3-p)=p(p-3)/3(3-p)=-p/3
2. 1) x²/(x-1)²-x/(x-1)=x/(x-1)²
2)x/(x-1)²*(x-1)/2x=1/2(x-1) ответ Б
3. a) 1)=1/(m-1)
2)1/(m-1)*n(m-1)/m=n/m
б) 1) =а/(а+1)
2)1÷a/(a+1)=(a+1)/a
3) 1-(a+1)/a=-1/a
4) 1÷(-1/a)=-a
Объяснение:
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Answers & Comments
Ответ:
1. 1) (3-p)(3+p)/3(p+3)*p²/(3-p)²=p²/3(3-p)
2) p²/3(3-p)-p/(3-p)=p(p-3)/3(3-p)=-p/3
2. 1) x²/(x-1)²-x/(x-1)=x/(x-1)²
2)x/(x-1)²*(x-1)/2x=1/2(x-1) ответ Б
3. a) 1)=1/(m-1)
2)1/(m-1)*n(m-1)/m=n/m
б) 1) =а/(а+1)
2)1÷a/(a+1)=(a+1)/a
3) 1-(a+1)/a=-1/a
4) 1÷(-1/a)=-a
Объяснение: