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Q: How do you know that the square root of 121 is 11?

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The square root of 121 is 11, because 11 x 11 = 121 * * * * * -11 is also a square root of 121.

The square root of 121 is the number which multiplied by itself will give 121, the answer is 11. (11*11=121). we write 11*11 as 112 thus if 112 = 121, then the square root of 121 or √121= 11 as you can see a square root of a number is the opposite of the square of a number

The square root of 121 is 11 and 11 plus 49 = 60

The square root of 121 is 11, and 11 is a rational number.

square root of 49 is 7 square root of 121 is 11

The square root of 121 is 11

The square roots of 121 are 11 and -11.

The square root of 121 is 11

+11 and -11

The square root of 121 is 11 which is not an irrational number.

Yes - the square root of 121 is equal to Â±11.

The square root of 121 is 11 which is a rational number

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