What 2 square numbers make 685?

"What 2 square numbers make 685?" means "What 2 square numbers added together equal 685?" In other words, "What two square numbers when added together have a sum of 685?"

First, note that a square number is what you get when you multiply a number by itself, which means that the square root of a square number will equal a whole number.

Thus, we are solving A and B in this equation where both A and B are square numbers.

A + B = 685

We found the following combinations of two square numbers that when added together equal 685:

9 + 676 = 685
324 + 361 = 685

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