What 2 square numbers subtract to make 1979?

What two square numbers subtract to make 1979? In other words, when you subtract one square number from another square number, the answer is 1979. 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 = 1979

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

990² - 989² = 1979

990² is 980100 and 989² is 978121, therefore the answer to the question "What 2 square numbers subtract to make 1979?" is 980100 and 978121 as illustrated below:

980100 - 978121 = 1979

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 1979. Below we list alternate solutions if available.

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