Answer:
[tex]b^{12}[/tex]
Step-by-step explanation:
Using the rule of exponents
[tex](a^m)^{n}[/tex] ⇔ [tex]a^{mn}[/tex], thus
[tex](b^4)^{3}[/tex] = [tex]b^{4(3)}[/tex] = [tex]b^{12}[/tex]
