marine8144 marine8144

03-03-2016
Mathematics

contestada

montrer que f(x)=(2x-13)(2x-7) pour tout réel x

Respuesta :

tomzy416 tomzy416

03-03-2016

2x^2-14x-26x+91=0
2x^2-40x+91=0
x=17.3 &x=2.6

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