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Alexandra9
@Alexandra9
April 2019
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Svp j ai besoin d aide juste pour resoudre une equation ! Svp svp
1000/ x+50 + 1000/ x-50 = 4,5
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caylus
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Bonjour,
Je suppose que l'écriture exacte est 1000/(x+50)+1000/(x-50)=4.5
[(x-50)*1000+(x+50)*1000)]/(x²-50²)=45/10
2000x/(x²-50²)=45/10
45x²-20000x-112500=0
Δ=20500²
x1=450
x2=-50/9
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Verified answer
Bonjour,Je suppose que l'écriture exacte est 1000/(x+50)+1000/(x-50)=4.5
[(x-50)*1000+(x+50)*1000)]/(x²-50²)=45/10
2000x/(x²-50²)=45/10
45x²-20000x-112500=0
Δ=20500²
x1=450
x2=-50/9