Bonsoir ,j ai besoin d aide merci a.(...+4)²=x²+...+...
b.(y-...)²=....-6y+....
c.(....+6)(...-...)=k²-...
d.(1-....)(...+...)=....-49x²
e(....-8)²=....-48x+....
f.(....+....)(...-3)=100y²-....
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