Using the digits 1-10 at most one time each, fill in the boxes so that the result is closest to 1

-2

7 - 9 = -2

reversed:

-2 + 9 = 7

answer: 4  

the square root of 16 is 4. it is a very simple mathematic concept. a square root when a number multiplied by itself will result in a number. here, the number 16 comes when 4 is multiplied by 4. hence the square root of 16 is 4. you can always figure out a square root by the inverse operation of squaring.  

answer: i also need

step-by-step explanation:

feed your rabbit lettuce.