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mixer [17]
3 years ago
11

How do you do this ​

Mathematics
2 answers:
poizon [28]3 years ago
8 0

Answer:

The best choice is to use a calculator (the button is \sqrt), but if that is not an option here are a few tips.

If a perfect square ends with a 1, then the last digit of its square root has to be either 1 or 9.

If a perfect square ends with a 4, then the last digit of its square root has to be either 2 or 8.

If a perfect square ends with a 5, then the last  digit of its square root is definitely 5.

If a perfect square ends with a 6, then the last digit of its square root has to be either 4 or 6.

If a perfect square ends with a 9, then the last digit of its square root has to be either 3 or 7.

I took a look and all of them seem to be perfect squares so hopefully this helps!

VladimirAG [237]3 years ago
4 0
You square it so for example the first one would be 1
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