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3i and or -3i

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โˆ™ 2011-06-29 20:42:20
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Q: What is the square root of negative 9?
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How do you do square roots with negatives?

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


4 square root of negative 9?

4 square root of -9 = 4 square root of (-1)(9) = 4 square root of (i29) = 4(3i) = 12i


What is the negative square root of 81?

-9


What is the negative square root of 9?

-3


Negative square root of 81?

9


What is the square root of 9 time square root of negative 81?

Square root of 9: 3Square root of -81: 9i The product of both is 27i


Find the Square Root -81?

There is no square root for a negative number. It is an imaginary number.


What is the number i?

i is the symbol for an imaginary number, a complex number with the property i2=-1. The square root of a negative number is the square root times i. For example, the square root of -9 = 3i.


Is there another answer to the square root or 81 instead of 9?

Yes. -9 (that is, negative 9)


What is the sq root of -9?

81 because there are no negative square roots


What times itself equals -9?

3i the letter "i" is a complex number in mathematics. it stands for the square root of negative one. since you cannot take the square root of negative numbers in your caculators the correct way to represent it is by putting an "i" in the place of the square root of negative one.


How do you get the square root of negative 144?

square root of a negative number is imaginary square root of negative 1 is defined as i square root of negative 144 is sqrt ((144)(-1)) = 12i


What is the positive sqare root of a number?

Square roots can be positive or negative. 9 x 9 = 81 -9 x -9 = 81 9 is the positive square root of 81.


How is it possible to have a positive or negative answer to the square root of a number?

What do you get when you multiply positive 3 by itself ? (You get 9.) What do you get when you multiply negative 3 by itself ? (You get 9 again.) The square root of a number is something which, when you multiply it by itself, gives you the number. When we multiplied positive 3 by itself, we got 9. So positive 3 is a square root of 9. When we multiplied negative 3 by itself, we got 9 again. So negative 3 is also a square root of 9. Every positive number has two square roots. They're both the same digits, but one is positive and the other one is negative.


Is the square root of -9 a rational number?

No - a square root of a negative number is an imaginary number. for example, sqrt(-9) is equal to 3i.


Is the square root of -81 rational or irrational?

Since it is the square root of a negative number, it is actually imaginary, neither rational nor irrational. It is equal to 9i, or 9 times whatever the square root of negative one is.square root of -81 = square root of 81 times i = 9i


What is the negative square root of 1 over 81?

-1/9


What is the negative square root of 100 over 81?

It is -10/9


Is the square root of negative 9 imaginary?

Yes it is an imaginary number


What is the square root of a negative number plus the square root of a negative number?

Nothing. You cannot have a square root of a negative number. The square root of negative one is called i, but i is an imaginary number. It does not exist and does not follow the properties of real numbers. (For example, if a and b are positive, then the square root of a times the square root of b is the square root of ab. But the square root of -7 is not the square root of 7 times i.)


What are the Order of Operations when simplifying a negative square root if using the quadratic formula to solve a quadratic formula?

The usual rules for "order of operation" apply. Don't forget that the square root of a negative number is an imaginary number. As an example, the square root of -9 is 3i (that is, the square root of +9, times the "imaginary unit").


What is the square root of negative 37?

The square root of negative 37 is: ~6.0827 i


What is the square root of negative 168?

The square root of negative 168 is: ~12.9315 i


What is the square root of negative 40?

The square root of negative 40 is: 6.324555 i


How do you do a square root of a negative number that is not a perfect square?

The square root of a negative number is not real.