Form the conjugate of the denominator:
The denominator is so to form
the conjugate we use the first term but
we change the sign of the term in ,
so the conjugate of is
Put that over itself. That is, we form the
fraction which is just
in value.
Then we multiply the original expression by
this:
Put parentheses around everything:
Indicate the multiplication of numerators and denominators:
Use FOIL on the top and bottom:
Now replace the 's by
Make two fractions:
To write it in the form ,
Edwin