Répondre :
x/1x=x+5/x+8
x/x = x + 5/x + 8
x + 5/x + 8 = 1
x + 5/x + 7 = 0
5/x = -x-7
x(-x-7) = 5
-x²+7x = 5
-x²+7x-5 = 0
delta=29
Solutions
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x1 = (-b+racine(delta))/2a = (-7+racine(29)) / -2
x2 = (-b-racine(delta))/2a = (-7-racine(29)) / -2
x/x = x + 5/x + 8
x + 5/x + 8 = 1
x + 5/x + 7 = 0
5/x = -x-7
x(-x-7) = 5
-x²+7x = 5
-x²+7x-5 = 0
delta=29
Solutions
--------------
x1 = (-b+racine(delta))/2a = (-7+racine(29)) / -2
x2 = (-b-racine(delta))/2a = (-7-racine(29)) / -2