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saadsamodi
@saadsamodi
January 2021
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saoit je ne comprend pas cette question svp pouvez vous m aider
factoriser l expression suivante:
(x+5)le tout au carre -(8x-3)le tout au carre
merci d avance
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trudelmichel
Verified answer
Bonjour,
(x+5)²-(8x-3)²
a²-b²=(a+b)(a-b)
(x+5)²-(8x-3)²=((x+5)+(8x-3))((x+5)-(8x-3))
(x+5+8x-3)(x+5-8x+3)=
(9x+2)(-7x+8)
1 votes
Thanks 1
nini999
Verified answer
Bonjour :
(x + 5)² - (8x - 3)²
(x + 5)² - (8x - 3)² il prend la forme de a²-b² = (a-b)(a+b)
Alors :
[(x + 5) - (8x - 3)][(x + 5) + (8x - 3)]
(x + 5 - 8x + 3)(x + 5 + 8x - 3)
(x - 8x + 5 + 3)(x + 8x + 5 - 3)
(-7x + 8)(9x + 2)
J’espère t'avoir t'aider
0 votes
Thanks 0
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salut svp comment mettre en evidence l existence du monoxyde de carbone dans l air? merci da vance
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Verified answer
Bonjour,(x+5)²-(8x-3)²
a²-b²=(a+b)(a-b)
(x+5)²-(8x-3)²=((x+5)+(8x-3))((x+5)-(8x-3))
(x+5+8x-3)(x+5-8x+3)=(9x+2)(-7x+8)
Verified answer
Bonjour :(x + 5)² - (8x - 3)²
(x + 5)² - (8x - 3)² il prend la forme de a²-b² = (a-b)(a+b)
Alors :
[(x + 5) - (8x - 3)][(x + 5) + (8x - 3)]
(x + 5 - 8x + 3)(x + 5 + 8x - 3)
(x - 8x + 5 + 3)(x + 8x + 5 - 3)
(-7x + 8)(9x + 2)
J’espère t'avoir t'aider