Réponse :
Salut,
On a:
x(x-35/20) + 7/4(x-35/20)
x^2 - 35x/20 + 7x/4 - 7*35/(4*20)
x^2 - 28x/20 - 105/40
x^2 - 28x/20 - 21/10
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Réponse :
Salut,
On a:
x(x-35/20) + 7/4(x-35/20)
x^2 - 35x/20 + 7x/4 - 7*35/(4*20)
x^2 - 35x/20 + 7x/4 - 7*35/(4*20)
x^2 - 28x/20 - 105/40
x^2 - 28x/20 - 21/10