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What is the positive difference between the roots of the equation `y =1/3 x ^(2) -2x +3` ?

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The correct Answer is:
0
set the equation equal to zero, then divide through by 3 on both sides to remove the `x ^(2)-`coefficient:
`3x ^(2) + 9x -54 =0`
`x ^(2) + 3x -18 =0`
`(x-3) (x+6) =0`
`x=3 or -6`
The question asks for the sum of the roots, which i
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