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12i where i is the square root of -1

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Wiki User

8y ago

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Wiki User

13y ago

Take the square root of +144, then add "i" at the end - where "i" is the imaginary unit.

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Zhou Changying

Lvl 3
4y ago

12, And here is an easier way to find the square root of something like say your teacher ask what is the square root of 20. So its basically 10.To answer a square root question it is dividing by 2.

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Wiki User

13y ago

Square root (1.44) = 1.2

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Wiki User

10y ago

+12 and -12.

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Wiki User

9y ago

The square roots of 144 are 12 and -12.

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Wiki User

15y ago

sqrt(144) = +12 or -12.

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Wiki User

10y ago

12

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Anonymous

Lvl 1
4y ago

First, we can ask ourselves: what number do we square to get 144? When we square a number, we multiply it by itself. Example: 3 squared is 9, because 3x3=9. We can guess and check until we find a number that has a square of 144. 4 squared is 16, 5 squared is 25, 6 squared is 36... Aha! 12 squared is 12x12, which is 144! Therefore, the square root of 144 is 12.

P.S. -12 squared is also 144, which is -12x-12. If you are confused, lets rewrite it like this: -12x-12=(-1x12)x(-1x12). We can use the Associative Property to say: (-1x12)x(-1x12) = (-1x-1)x(12x12)= 1x144 = 144.

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Q: What is the square root of 144?
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