One of the square roots of a positive number is positive. What is the other one?
- positive
- negative
- positive or negative.
Explanation from PART66Online
Every positive number has two square roots that are equal in size but opposite in sign, because squaring a negative number also gives a positive result. If one root is positive, the other must be its negative counterpart. For example the roots of 9 are +3 and -3.
Jordi asked · 9 Feb 2020
why?I dont understand.
Community Comments (3)
Ex square root of 4 = 2*2 and square root of minus 4 also equal
-2*-2 =4
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