On considère D=x²-9+(x-3)(3x+7) 1.Développer D 2.a.Factoriser x²-9 b.En deduire la forme factorise.... Pergunta de ideia demadelinevg

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On considère D=x²-9+(x-3)(3x+7) 1.Développer D
2.a.Factoriser x²-9
b.En deduire la forme factoriser de D

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