# Sum of Two Squares

• • Jay on March 5, 2016 at 1:35 pm

What if the first number is odd?

• • Jay on March 5, 2016 at 1:35 pm

For example: 15^2 + 30^2

• • Math Rocks on March 25, 2016 at 3:37 pm

15^2 + 30^2 equals 1125. You just follow the same trick, so 15^2 is 225, and you divide 225 by 2, yielding 112.5, and you multiply that by 10. I think Mr. Gillespy meant that adding the zero means multiplying by 10.

• • anthony gillespey on April 27, 2016 at 1:02 am
Author

Exactly. Adding zero means times 10.

• • THao Nguyen on August 2, 2018 at 8:36 pm

What would you do in the approximate question like 14^2+48^2. Thanks

• • anthony gillespey on August 9, 2018 at 6:46 pm
Author

The type of question usually has a pattern like 2 times 3 times or 7 times as big are you sure its not one of those?

• • Rishab on June 22, 2019 at 6:15 am

So what do I do if the question has the units digits add up to ten and tens digits are the same? For example: 63^2+67^2

• • anthony gillespey on August 22, 2019 at 7:37 pm
Author

By the blue book its all in there.