B = ( x - 5)(2x + 1) D = (7x+1)(2x-3) C = (3x-2)(4x-5) E = (6x-3) × (6x-3)
Mathématiques
oussounakrbt
Question
B = ( x - 5)(2x + 1)
D = (7x+1)(2x-3)
C = (3x-2)(4x-5)
E = (6x-3) × (6x-3)
1 Réponse
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1. Réponse almouhaka
Réponse:
b=x×2x+x×1+5×2x+5×1
=2x²+x+10x+5
=2x²+11x+5