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Sagot :

TENURF

Bjr

1.

[tex]f(x)=-5x^3+2[/tex]

2.

[tex]f(-2)=-5*(-2)*(-2)*(-2)+2=-5*-8+2=40+2=42[/tex]

3.

[tex]f(x)=2 < = > -5x^3=0 < = > x=0[/tex]

Merci

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