June 2021 0 32 Report
CE CALCUL EST IL BON ? D= [(6x+7)(6x-7)]*[(x-4)(x-7)]
= 36x^2-42x+42x-49*x^2-7x+4x-28
= 36x^2-3x-77

Merci de me dire si cela est bon , et si c'est pas bon, me dire ou je me suis trompée !
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