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Esmeralda03
@Esmeralda03
April 2019
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Resoudre dans R, selon les valeurs de k, l'équation:
x²-4x-5=k
merci
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x²-4x-5=k donc
x²-4x-(k+5)=0
delta = 16+4(k+5)= 4(K+9)
delta>=0 si K>=-9, donc l'équation a une ou des solutions pour
K>=-9
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delta = 16+4(k+5)= 4(K+9)
delta>=0 si K>=-9, donc l'équation a une ou des solutions pour
K>=-9