Respuesta :

Answer:

[tex]\frac{3}{b^{0}b^{4} }[/tex]

Step-by-step explanation:

Move [tex]b^{-4}[/tex] to the denominator in [tex]\frac{3b^{-4} }{b^{0} }[/tex]

using the negative exponent rule [tex]b^{-n} =\frac{1}{b^{n} }[/tex]