Bjr est ce que qqun !!!d'expérimenter!!! pourrais me dire si c juste: R(x)=(x²-x+1/4)-(5-x)(2x-1)+1-x
R(x)=(x-1/2)²-2(5-x)(x-1/2)-2(x-1/2)
R(x)=(x-1/2)[(x-1/2)-2(5-x)-2]
R(x)=(x-1/2)(x-1/2-10+2x-2)
R(x)=(x-1/2)(3x-25/2)
R(x)=(x-1/2)²-2(5-x)(x-1/2)-2(x-1/2)
R(x)=(x-1/2)[(x-1/2)-2(5-x)-2]
R(x)=(x-1/2)(x-1/2-10+2x-2)
R(x)=(x-1/2)(3x-25/2)
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