The two answers are -4 and 4, because 0-4 is -4 and 0+4 is 4. Hope this helps
I think it is 30.48 because i looked it up
Square root of A= 7.66 ( Took the first 2 numbers after the decimal.)
Square root of B= 3.16 (Took the first 2 numbers after the decimal.)
HOPE THIS HELPS! ^_^