Finding one is the tricky part. The other one is just the negative of the first.
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Use a calculator (if you need) to find the principal square root. The second square root is the negative of the number.
The two square roots of the number, '169', are +13 and -13 .
Find the square root of 23. The second one is the same number with a negative sign.
There is no number that has more than two square roots.By definition, the "square" bit implies two.Every number has exactly:TWO square roots,THREE cube roots,FOUR quadratic roots,etc.
The two square roots of i are (k, k) and (-k, -k) where k = sqrt(2)/2 = 1/sqrt(2).