Bonjour pourriez vous m'aider svp  ( resoudre une équation-produit) exercice 1 

x(x+2)=0
(y+6)y=0
-x(x+9)=0
(a+1)(a+7)=0
(b-5)(b+3)=0
(y-6)(4-y)=0

exercice 2

(x+1)x=0
y(y+8)=0
(-x+6)(x+2)=0
(a-1)(a-7)=0
(-5-b)(b-3)=0
(-y-6)(-4-y)=0

exercice 3

(x+1)(x+2)=0
(y+6)(y-9)=0
(x+3)(x-1)=0
(a+1)(a-7)=0
(b-5)(b+3)=0
(y-6)(y-10)=0

merci d'avance
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