casyefoster
casyefoster
07-02-2017
Mathematics
contestada
Let f(x)=9-x^2,g(x)=3-x. Find (f-g)(x)
Respuesta :
SyntaxError
SyntaxError
15-02-2017
[tex](f-g)(x)=9-x^2-(3-x)\\ (f-g)(x)=9-x^2-3+x\\ (f-g)(x)=-x^2+x-6\\ (f-g)(x)=x^2-x+6\\ (f-g)(x)=(x-3)(x+2)\\ x=3\\x=-2[/tex]
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