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Sagot :

INEQUATION

Bonjour,

Résoudre:

(15/x)+x=13 ; x≠ 0

(15+x*x)/x= 13

x²+15= 13x

x²-13x+15= 0

Δ= (-13)²-4(1)(15)= 109 > 0 donc 2 solutions

x1= (-(-13)-√109)/2(1)= (13-√109)/2

x2=  (13 + √109)/2

S= { x1; x2 }

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