SOLUTION: ab-a-b+1

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Question 179879This question is from textbook
: ab-a-b+1 This question is from textbook

Answer by Mathtut(3670) About Me  (Show Source):
You can put this solution on YOUR website!
ab-a - b+1
:
a%28b-1%29-%28b-1%29
:
%28b-1%29%28a-1%29