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Just root the number two times.

Example. root of 9 is 3, root of 3 is

1.7
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Q: How do you add two square roots?
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How do you add simplified square roots?

To add simplified square roots, first simplify each individual square root expression. Then, if the numbers inside the square roots are the same, add or subtract the numbers outside the square roots. Finally, combine the numbers inside the square roots if possible. For example, to add √8 and √18, simplify them individually as 2√2 and 3√2. Since the numbers inside the square roots are the same, add 2 and 3 to get 5√2 as the final result.


What is a number that has more than two square roots?

There is no number that has more than two square roots.By definition, the "square" bit implies two.Every number has exactly:TWO square roots,THREE cube roots,FOUR quadratic roots,etc.


Does a positive number have two square roots?

Yes, a positive square root and a negative one. For example, the two square roots of 9 are +3 and -3.