One of the square roots of a positive number is positive. What is the other one?
- positive
- negative
- positive or negative.
Explanation
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 asking:
why?I dont understand.
Community Comments (3)
C
Carlotambo66 Posts: 3 18.01.2021 / 10:10
for "the other one" the question intend the negative number
M
mano Posts: 3 03.04.2024 / 20:21
The other square root of a POSITIVE number is the NEGATIVE of the first one.
Ex square root of 4 = 2*2 and square root of minus 4 also equal
-2*-2 =4
Ex square root of 4 = 2*2 and square root of minus 4 also equal
-2*-2 =4
J
Jordi Posts: 198 17.10.2024 / 16:12
thanks man i managed to passed this subject
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