A = (+2)(5+3). B= (4y+7)(y+2). C= (7+3z)(2z+3). D= (10+8t)(9+2t).
Mathématiques
nora10
Question
A = (+2)(5+3). B= (4y+7)(y+2).
C= (7+3z)(2z+3). D= (10+8t)(9+2t).
C= (7+3z)(2z+3). D= (10+8t)(9+2t).
1 Réponse
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1. Réponse Lorex2
C= (7+3z)(2z+3).
=7 x 2z + 7x 3 + 3z x 2z + 3z x 3
= 14z+ 21+ 6z+ 9z
= 29z+ 21