10, because when you add 5 and 7 then subtract 10 it equals 2
Its 49 i hope u get it right
Well This is how you get a square to get the eligble answer so there.
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 
Answer:
1/6+2/6=3/6
1/2
Step-by-step explanation: