YBUNYAMIN694
Answered

Fiche n°13
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• (x+ ...)2= ... +
= ... + ... + 9
(2x + 3)2 = ... + ... + ...​

Sagot :

Réponse:

  1. .(x+ 3)²= x² +6x + 9
  2. .(2x+3)² = 4x² + 12x + 9