Answer:
given us,
n=4
here
3^-n+1-3^-n+2
3^-4+1-3^-4+2
-4+1-4+2
-5
Step-by-step explanation:
we can put value in n .we can power add and subtract then we can cut 3 then power we can add or subtract
Eleven minus four equal seven
11-4=7
Answer:
a
Step-by-step explanation:
I think so..
12 is 1 more than 11
12 is one less than 13
this ok?