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Sagot :

bonjour

(x+2)(x+2)-9=0

(x+2-3)(x+2+3)=0

(x-1)(x+5)=0

x=1   ou x=-5

Salut

(x + 2)² -9 = 0

(x + 2 -3) (x + 2 + 3)= 0

(x - 1) (x + 5) = 0

x= 1 et x= -5

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