It is +1
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The square root of minus 8 is equal to the square root of 8 times the square root of minus 1, or 2.8284i.
That would be the fourth root or the number raised to the power of (1/4).
sqrt of the fourth power = square So the answer is (50x)2 = 2500x2
9 square root 4 minus 12 square root 4 = -6
4^3√32-3^3√108+^3√256