Answer:
4
Step-by-step explanation:
[tex]\frac{b^{4}}{4} = \frac{2^{4}}{2^{2}}=2^{4-2}= 2^{2}=4[/tex]
[tex]\frac{b^{4}}{4} = \frac{2^{4}}{4}=\frac{4^{2}}{4}= \frac{16}{4}= 4[/tex]