Answer:
81
Step-by-step explanation:
If [tex]b=a+3[/tex] then what will [tex](a-b)^4[/tex] be?
We substitute [tex]b=a+3[/tex] into [tex](a-b)^4[/tex] to get [tex](a-(a+3))^4=(a-a+3)^4=(0-3)^4=(-3)^4=81[/tex]
