The square root of what is 19?

In order to know the result of the exation:

√x=19

we need to bring both to the power of 2: so we will have:

x=19^2,

and 19^2 is 361. 361 is the number that if you take a square rook of it, it will be 19.

√x = 19

x = 19²

x = 361

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