There are no real numbers, only in the imaginary field they are -6i and 6i where i is the imaginary square root of -1.
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The square root of 36 and the square root of 49.
The square root of 36 is 6 and the square root of 49 is 7 These are used as 42 is between 36 and 49.
The square roots of 36 are +6 & -6 Remember +6 x + 6 = (+)36 Also -6 x -6 = (+)36 Double minus becomes positive, so square roots must show both plus and minus answers. = +36
positive six and negative six. i.e. +6 & -6
6, -6.