A square root has to be a number multiplied by itslef. For example the square root of 16 is 4,4x4=16. 3x3=9 thats your answer.
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The square root of 343 is an irrational number which is 7 times the sq rt of 7
The square root of -1 is not a real number like -2.5, 0, or 5. Instead, it is and imaginary number, i, and i = the square root of -1. The answer is imaginary because you can never take a real number, square it, and get a negative number. However, i^2 = -1.
3 is the square root of 9
Answer: -9 -9 * -9 = 81 81 * -9 = -729
square root(minus 9) = 3 ior in correct mathematical notation it is (+,-)i_square root(9)