Answer:
a^7
Step-by-step explanation:
[tex]\frac{a^{10}}{a^3}\\\\\mathrm{Apply\:exponent\:rule}:\quad \frac{x^a}{x^b}=x^{a-b}\\\frac{a^{10}}{a^3}=a^{10-3}\\\\=a^7[/tex]
