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Coralieee2
@Coralieee2
January 2021
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Bonjour/Bonsoir.
J'ai un devoir de mathématique je dois rendre demain mais je ne comprends vraiment pas ce que je dois faire...
Merci pour vos réponses...
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calinizou
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Bonsoir tu développe puis tu réduis
(x-2)²-(x-3)(x-4)=3x-8
x²+2x+4-x²+4x-3x-12=
2x+4x-3x=3x
4+(-12)=-8
ensuite tu cherche x x-2=9998 donc 9998+2=10000
(10 000-2)²-(10 000-3)(10 000-4)=3 * 10 000-8=30 000-8=29 992
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Verified answer
Bonsoir tu développe puis tu réduis(x-2)²-(x-3)(x-4)=3x-8
x²+2x+4-x²+4x-3x-12=
2x+4x-3x=3x
4+(-12)=-8
ensuite tu cherche x x-2=9998 donc 9998+2=10000
(10 000-2)²-(10 000-3)(10 000-4)=3 * 10 000-8=30 000-8=29 992