The 2 real roots are ±2.236 approx.
If the domain is extended to complex numbers, there are also ±2.236i where i is the imaginary square root of -1.
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The 4th root of 7 = ± 1.626577
Square root of 25 = 5
41
55 * 5 = 25* * * * *The square root of 25 is -5 or +5
The square root of 25 is 5.