Claire94 Claire94

18-02-2015
Mathematics

contestada

How do you find x
X*-6x-7=0

Respuesta :

konrad509 konrad509

18-02-2015

[tex]x^2-6x-7=0\\ x^2+x-7x-7=0\\ x(x+1)-7(x+1)=0\\ (x-7)(x+1)=0\\ x=7 \vee x=-1[/tex]

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