Réponse :
Explications étape par étape
=(a2+1)(b2+1)
=a2×b2+a2×1+1×b2+1×1
=ab2+a2+b2+1
=(ab+1)2 + (a-b)2
=ab×ab+1×1+ a×a-b×b
=ab2+1+a2+b2
(a2+1)(b2+1)=(ab+1)2 +(a-b)2
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Réponse :
Explications étape par étape
=(a2+1)(b2+1)
=a2×b2+a2×1+1×b2+1×1
=ab2+a2+b2+1
=(ab+1)2 + (a-b)2
=ab×ab+1×1+ a×a-b×b
=ab2+1+a2+b2
(a2+1)(b2+1)=(ab+1)2 +(a-b)2