Answer:
[tex]7^{6}[/tex]
Step-by-step explanation:
Using the rule of exponents
[tex]a^{m}[/tex] × [tex]a^{n}[/tex] = [tex]a^{(m+n)}[/tex], then
[tex]7^{3}[/tex] × [tex]7^{3}[/tex] = [tex]7^{(3+3)}[/tex] = [tex]7^{6}[/tex]