In general, we need to start with transforming a complex fraction into a simpler one.
/ ( x–2
= multiply both the numerator and the
denominator by x2y2
= simplify by using distributive law (open the
– x2y) / ( y2
= factor both parts of the resulting
– x) / ( y – x)( y + x) = cancel the common factors
/ (x + y)
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