Question: Let f ( x , y ) = x y + 6 x - 9 y - 4 . Find all values of x such

Let f(x,y)=xy+6x-9y-4. Find all values of x such that f(x,x)=0.
x=(Use a comma to separate answers as needed.)
Let f ( x , y ) = x y + 6 x - 9 y - 4 . Find all

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