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Question Number 12257 by b.e.h.i.8.3.4.1.7@gmail.com last updated on 16/Apr/17
Answered by sma3l2996 last updated on 17/Apr/17
(a+b−2ab)2+(a+b−1)2=(a2+b2+4a2b2−4ab2+2a(b−2ab))+(a2+b2+1−2b+2a(b−1))=2a2+2b2+4a2b2−4ab2+2ab−4a2b−2b+2ab−2a+1=2a2(1+2b2−2b)+2a(2b−2b2−1)+2b2−2b+1=(2b2−2b+1)(2a2−2a+1)soit′scorrect
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