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Sagot :

Réponse:

-2x²+9x-7≥0

-(x-1)(2x-7)≥0 * (-1)

(x-1)(2x-7)≤0

x-1≤0

x ≤1

2x-7≤0

2x≤7

x≤7/2

5x⁵+11x+2<0

(5x+1)(x+2)<0

x+2<0

x<-2

5x+1<0

5x<-1

x<-1/5

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