SOLUTION: How do you find the square root of a number? Also, how can you identify the square root as rational or irrational?

Question 422280: How do you find the square root of a number? Also, how can you identify the square root as rational or irrational?
Answer by richard1234(7193) (Show Source): You can put this solution on YOUR website!
The square root is simply the number such that if you multiply it by itself, you get the original number. For example, . Many square roots come from memorization, others you'll need a calculator or you can use differential methods.

Identifying whether square roots are (ir)rational takes some practice. For integers, if you can easily recognize that the number is a perfect square, say 529, then you can conclude that is rational. Decimals are even trickier, as it might take memorization to conclude that is rational.
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