Simplifier : 2 x + 6 +1 (8 x +9) 2 x + 6 + 1 (8 x -9) 2 x +6 -1 ( 8 x +9) 2 x +6-1 (8 x -9)
Mathématiques
amandine1
Question
Simplifier :
2x + 6 +1 (8x+9)
2x + 6 + 1 (8x-9)
2x+6 -1 ( 8x+9)
2x+6-1 (8x-9)
2x + 6 +1 (8x+9)
2x + 6 + 1 (8x-9)
2x+6 -1 ( 8x+9)
2x+6-1 (8x-9)
1 Réponse
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1. Réponse ella2475
2x+6+1(8x+9)= 2x+6+8x+9 = 10x+15 2x+6+1(8x-9)= 2x+6+8x-9 = 10x-3 2x+6-1(8x+9)= 2x+6-8x-9 = -6x-3 2x+6-1(8x-9)= 2x+6-8x+9 = -6x+15