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Sagot :

ISAPAUL
Bonsoir
on appelle x le côté du carré 
Aire du carré = x² 
Aire triangle = (100x)/2 
on obtient
x² = (100x)/2
2x²-100x = 0 
x(2x-100)= 0      facteur nul  soit x = 0 soit x = 100/2 = 50 
RRRAAAYYYAAAANNN
A carré = x² 
A triangle = (100x)/2 
on obtient
x² = (100x)/2
2x²-100x = 0 
x(2x-100)= 0    

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