What 2 square numbers subtract to make 155?

What two square numbers subtract to make 155? In other words, when you subtract one square number from another square number, the answer is 155. 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 = 155

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

18² - 13² = 155

18² is 324 and 13² is 169, therefore the answer to the question "What 2 square numbers subtract to make 155?" is 324 and 169 as illustrated below:

324 - 169 = 155

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 155. Below we list alternate solutions if available.

6084 - 5929 = 155

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