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Tom0602
@Tom0602
May 2019
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Bonjour, pouvez-vous m'aider à résoudre les équations suivantes svp:
x²+8x=0
x²+16x+64=0
16x²+16x+64=0.
Merci d'avance.
Thomas.
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Verified answer
Bonjour,
★x²+8x=0
x(x+8)=0
x=0 ou x+8=0. x=-8
★x²+16x+64=0
(x+8)²=0
x+8=0
x=-8
★16x²+16x+64=0
(4x+8)²=0
4x+8=0
4x=-8
x=-8/4
x=-2
1 votes
Thanks 1
Tom0602
Merci, à bientot! :)
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Verified answer
Bonjour,★x²+8x=0
x(x+8)=0
x=0 ou x+8=0. x=-8
★x²+16x+64=0
(x+8)²=0
x+8=0
x=-8
★16x²+16x+64=0
(4x+8)²=0
4x+8=0
4x=-8
x=-8/4
x=-2