Hi Nicole,
I'll show you how to simplify this expression by doing a similar problem,
^{18 h2}/_{3h4}
The first thing to notice here is that the numerator and denominator are both divisible by 3 so the expression can be simplified to
^{6 h2}/_{h4}
Now if you think of h^{2} as h h and h^{4} as h h h h then you can also see that the numerator and denominator are both divisible by h h. Thus the expression further simplifies to
^{6}/_{h h} = ^{6}/_{h2}
Now try your problem,
Penny
