Answer:
[tex] \dfrac{2\sqrt{a}}{a} [/tex]
Step-by-step explanation:
[tex] 2a^{-\frac{1}{2}} = [/tex]
[tex]= 2 \times \dfrac{1}{\sqrt{a}}[/tex]
[tex]= 2 \times \dfrac{1}{\sqrt{a}} \times \dfrac{\sqrt{a}}{\sqrt{a}}[/tex]
[tex] = \dfrac{2\sqrt{a}}{a} [/tex]
