2 задание плиз очень надо

Question

2 задание плиз очень надо

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Answer 1

2. a)
1) (c-d)/c(c+d))-c/(d(d+c)=
=(d(c-d)-c^2)/cd(c+d)=
=(-(d-c)^2/(cd(c+d)
2) (d^2/(c(c^2-d^2))+(1/(c+d)
=(d^2/(c(c-d)(c+d))+1/(c+d)=
(d^2-cd+c^2)/(-c(d-c)(d+c)=
(d-c)^2/(-c(d-c)(d+c)=
=(d-c)/-c(d+c)
3) (d-c)^2*c(d+c)/
/(cd(c+d)*(d-c)=(d-c)/d