Ответы и объяснения

2013-04-19T13:50:24+04:00
2013-04-19T13:58:59+04:00

b/a-b-b/a+1=sqrt{2}/1/9-sqrt{2} - sqrt{2}/1/9 +1=9sqrt{2}-9sqrt{2}+162+1-9sqrt{2}=163-9sqrt{2}