Cd+d^2/6•12/(c+d) при c=1,d=2 (2a/1+a+1/a):a/1+a

Question

Cd+d^2/6•12/(c+d) при c=1,d=2 (2a/1+a+1/a):a/1+a

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Answer 1

2а/(1+а)+1/а

2а/(1+2а+а2)