Question

Дам 100 баллов, прошу прорешайте!)

Answer 1

1. (4а+5b²)/(60a³b³)

2. (x-7)/(x²-49)=(x-7)/(x+7)(x-7)=1/(x+7)

3. (5а-6)/(10*(а+b))

4. (7*(m+6)-10m+5*(m-6))/(m²-36)=(7m+42-10m+5m-30)/(m²-36)=

(2m+12)/(m²-36)=2*(m+6)/((m-6)*(m+6))=2/(m-6)