Best Answer

Treat it like a positive and add an i.

Explanation: The square root of negative nine is equal to the square root of nine times negative one is equal to the square root of nine times the square root of negative one. The square root of negative one represented by an italic lower case i. The square root of negative nine is 3i.

√-9 = √9 * -1 = √9 * √-1 = 3i

Study guides

☆☆

Q: How do you do square roots with negatives?

Write your answer...

Submit

Still have questions?

Related questions

The square roots of 9 are +3 and -3. The integers of their negatives are -3 and +3 respectively.

Any positive number has two square roots, a positive square root and its negative equivalent. This is because two negatives multiplied together equal a positive. In this instance, sqrt(625) = Â±25 (that is, 25 and -25).

(-5)^2 = (-5)(-5) = 25 The negatives cancel one another out.

They can, but they are called imaginary numbers. This is because a "square" of something is the number that, when multiplied by itself, will equal the first number. A negative multiplied by a negative equals a positive, and positives can't turn into negatives on their own, so there are no square roots of negative numbers.

The square roots are -1.07 and +1.07The square roots are -1.07 and +1.07The square roots are -1.07 and +1.07The square roots are -1.07 and +1.07

square inches do not have square roots only number have square roots.

Perfect square roots are square roots that have a whole number that can go into it perfectly. Nonperfect square roots are square roots that have decimal numbers going into it. Example: Perfect Square Root: 144- Square Root: 12 Nonperfect Square Root: 24- Square Root: About 4.89

No. The square roots 8 are irrational, as are the square roots of most even numbers.

You call them principal square roots.

The square roots of 64 are +8 and -8.

The square roots of 8100 are 90, -90

The answer depends on "different from WHAT?" Positive cube roots, or negative square roots?

People also asked