Respuesta :
Answer:
Option 3rd is correct.
[tex]b^{20}[/tex]
Step-by-step explanation:
Using the exponent rules:
[tex](a^n)^m = a^{nm}[/tex]
Given the expression:
[tex](b^5)^4[/tex]
Apply the exponent rules, we have;
[tex]b^{5 \cdot 4} = b^{20}[/tex]
Therefore, the correct simplification of the given expression is, [tex]b^{20}[/tex]