Question

упростить b/1-b^2+1/1+b

Answer 1

b/(1-b²)+1/(1+b)=b/((1-b)(1+b))+1/(1+b)=(b+1-b)/((1-b)(1+b))=1/(1-b²);a²-b²=(a-b)(a+b).

Answer 2

Объяснение:

b/(1-b^2)+1/(1+b)=b/((1-b)(1+b)) +1/(1+b)=

=(b+(1-b)) / ((1-b)(1+b)) =(b+1-b) / ((1-b)(1+b)) =

=1/((1-b)(1+b))=1/(1-b^2)