3i and or -3i
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There is no square root for a negative number. It is an imaginary number.
The square root of 3 times the negative square root of 3 can be calculated by multiplying the two square roots together. This results in -3, as the square root of 3 multiplied by the square root of 3 is the square root of 9, which simplifies to 3. Multiplying this by the negative sign gives us -3.
It is -10/9
81 because there are no negative square roots
The square root of negative 168 is: ~12.9315 i