i know the square root of 36 is 6 but wat if their was a negative sign in side the square root box. Then one outside the box not inside and one on both places
√36 = 6 as you say
√-36 is a complex number, written as 6i
-√-36 is thus -6i
√-36 is a complex number, written as 6i
-√-36 is thus -6i