(b-2√b+1)/(√b-b) Сократите дробь
(b-2√b+1)/(√b-b) = ((√b-1)(√b-1))/(√b(1-√b))=-(√b-1)/√b =1/√b -1=√b/b-1
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(b-2√b+1)/(√b-b) = ((√b-1)(√b-1))/(√b(1-√b))=-(√b-1)/√b =1/√b -1=√b/b-1