X = -5.0990 or +5.0990 (approx).
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root 8 x root 26 = root (8 x 26) = 14.42 (also 2.83 x 5.10 = 14.433)
The square root of a value v is a number x such that, x multiplied by x equals v. Note that -x is also a square root.
What is a square root? Simply put, the square root of X2 is X, where X can be any number. Because 676=262 Therefore the square root of 676 is 26.
Yes, but it involves the square root of -1. sqrt (-X) = sqrt (X) * sqrt(-1)
It depends entirely on the value of x.