You can't simplify the expression, you just can change the expression's look (as skeeter did in his post). You don't have a denominator that could be simplified with the expression (example).
You can't simplify the expression, you just can change the expression's look. You don't have a denominator that could be simplified with the expression.
I thought I said that ... ?
anyway, lack of a denominator does not mean an expression cannot be simplified.