What 2 square numbers subtract to make 780?

What two square numbers subtract to make 780? In other words, when you subtract one square number from another square number, the answer is 780. What are the two square numbers?

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, this is what we are solving:

A² - B² = 780

We solved the equation above and found this to be true:

28² - 2² = 780

28² is 784 and 2² is 4, therefore the answer to the question "What 2 square numbers subtract to make 780?" is 784 and 4 as illustrated below:

784 - 4 = 780

Note that there may be more than one solution to a problem like this. Above, we found the lowest combination of square numbers that subtract to 780. Below we list alternate solutions if available.

1936 - 1156 = 780
4624 - 3844 = 780
38416 - 37636 = 780

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