Answer is 81x^12 z^20/y^12
how is this so?
Hello SSKThen move the term to the numerator to get rid of its negative power:
(By the way, what I should more correctly say is: multiply top-and-bottom by , and then note that in the denominator . But it's quicker to say: move the term ...)
Simplify:Lastly, remove the brackets by raising everything to the power :