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Sagot :

résoudre 5x³+1+4x³=72
9x³=71
x³=71/9
x=1,99
resoudre
5x³+1+4x³=72
9x³=72-1
9x³=71
x³=71/9
x=
[tex] \sqrt[3]{ \frac{71}{9} } [/tex]

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