Simplify: a7/4a1/2\frac{a^{7/4}}{a^{1/2}}a1/2a7/4
a5/4a^{5/4}a5/4
a3/4a^{3/4}a3/4
a9/4a^{9/4}a9/4
a5/2a^{5/2}a5/2