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Anissiz
@Anissiz
May 2019
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Bonjour, je suis en 3ème et je ne sais pas résoudre ça : 124124124118 (au carré) -124124124120x124124124115
Merci d'avance de m'aider une troisième perdu...
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slyz007
Verified answer
Bonjour
Si tu poses a=124124124118 tu vois que ton calcules se ramène à :
a²-(a+2)(a-3)=a²-(a²-3a+2a-6)=a²-a²+a+6=a+6
donc 124124124118-124124124120x124124124115=124124124118+6
=124124124124
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Verified answer
BonjourSi tu poses a=124124124118 tu vois que ton calcules se ramène à :
a²-(a+2)(a-3)=a²-(a²-3a+2a-6)=a²-a²+a+6=a+6
donc 124124124118-124124124120x124124124115=124124124118+6
=124124124124