Answer: See below
Explanation:
To find the square root of a number is the same as squaring the answer.
In this perticular example, the square root of 35 is +6 and -6.
As I said before, the square root of a number is the same as squaring the answer. That means, we square +6 and -6.
(6)²=36
(-6)²=36
It is clear that when you square 6 and -6, you get 36. This is because a positive×positive=positive, and negative×negative=positive.
That's why square root 36 equals +6 and -6.