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Sagot :

Bonsoir

on complique en factorisant  

E = (2x-3)(2x-3) +(2x-3)(x+8) = (2x-3)( 3x+5) 

si x = 3/2  E = 0

E=(3-3)²+(3-3)(3/2+8)

E=0+0(19/2)

E=0

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