You multiply by the conjuageOriginally Posted by afn2
Thus,
Thus,
It may help to consider this as a similar method (the exact same, actually) as another you've doubtless run into: rationalizing the denominator. Consider the similarities in the two following "simplification" problems.Originally Posted by afn2
and
In each case the denominator takes the form and you need to multiply the denominator by to remove the square root.
-Dan