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Belinda123
@Belinda123
January 2021
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Bonjour,
pourriez-vous m'aider à cet exercice de mon dm de mathématiques svp c'est urgent !
Merci d'avance pour votre aide
cordialement
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blondinetteoceane88
Verified answer
Bonjour
A=(2x-1)(2x+1)+(7x+3)(2x+1)
1) A=(2x-1)(2x+1)+(7x+3)(2x+1)
A=4x²+2x-2x-1+14x²+7x+6x+3
A=18x²+13x+2
2)A=(2x-1)(2x+1)+(7x+3)(2x+1)
A=(2x+1)(2x-1+7x+3)
A=(2x+1)(9x+2)
3)A=(2x-1)(2x+1)+(7x+3)(2x+1)
A=(2x -2-1)(2x -2+1)+(7x-2+3)(2x-2+1)
A=(-4-1)(-4+1)+(-14+3)(-4+1)
A=-5 x -3 + -11 x -3
A=15+33
A=48
4)A=(2x-1)(2x+1)+(7x+3)(2x+1)
A=(2x1/2-1)(2x1/2+1)+(7x1/2+3)(2x1/2+1)
A=(1-1)(1+1)+(3,5+3)(1+1)
A=0 x 2+ 6,5x2
A=13
2 votes
Thanks 1
Belinda123
Oh !! MERCI BEAUCOUP DE VOTRE AIDE !!!
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Bonjour J'ai besoins d'aide pour l'exercices 1 et 2 du dm merci
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Verified answer
BonjourA=(2x-1)(2x+1)+(7x+3)(2x+1)
1) A=(2x-1)(2x+1)+(7x+3)(2x+1)
A=4x²+2x-2x-1+14x²+7x+6x+3
A=18x²+13x+2
2)A=(2x-1)(2x+1)+(7x+3)(2x+1)
A=(2x+1)(2x-1+7x+3)
A=(2x+1)(9x+2)
3)A=(2x-1)(2x+1)+(7x+3)(2x+1)
A=(2x -2-1)(2x -2+1)+(7x-2+3)(2x-2+1)
A=(-4-1)(-4+1)+(-14+3)(-4+1)
A=-5 x -3 + -11 x -3
A=15+33
A=48
4)A=(2x-1)(2x+1)+(7x+3)(2x+1)
A=(2x1/2-1)(2x1/2+1)+(7x1/2+3)(2x1/2+1)
A=(1-1)(1+1)+(3,5+3)(1+1)
A=0 x 2+ 6,5x2
A=13