Question 265305
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The other tutor answered the question that you probably intended to ask....<br>
However, the expression you  show, "6/x-1= 3/x-x^2", is equal to this:<br>
{{{6/x-1= 3/x-x^2}}}<br>
The least common denominator in that problem is clearly just x.<br>
If you are actually working this problem, you should know enough about algebra to know that parentheses should be used wherever needed.<br>