Assuming you mean

first term is n=1, so 1²+3=1+3=4
2nd is n=2 so 2²+3=4+3=7
3rd is n=3 so 3²+3=9+3=12
the first 3 terms are 4,7,12
Answer:
Step-by-step explanation:
this is easy just multiply the VALUE of the cards or divide using standard algorithm
Answer:
Final simplified form is 
Step-by-step explanation:
We have been given an expression 
Now we need to simplify
and check which choice matches with simplified form of
.
You missed to provide the choices but still we simplify that.



When there is negative sign inside square root then we replace that by "i" iota.

Hence final simplified form is 
The answer is -3 because
-|28|= -28 now the problem looks like -28+(-5)^2
(-5)^2=25
-28 +25= -3