Q:

# What is a very hard math equation?

A:

An extremely difficult math equation is the Jacobi-Madden equation, a4 + b4 + c4 + d4 = (a + b + c + d)4 where variables a, b, c and d can be any positive integer, negative integer or zero. The Jacobi-Madden equation is considered a Diophantine equation.

## Keep Learning

The equation was proposed by the physicist Lee Jacobi and mathematician Daniel Madden in 2008. The Jacobi-Madden equation is notable because it represents a solution to the an equation proposed by Leonhard Euler in 1772. The Jacobi-Madden equation proves that there are potentially infinitely many solutions using nonzero integers to the 1772 equation.

Sources:

## Related Questions

• A: Even numbers are integers that when divided by two produce another integer. Odd numbers are integers that are not divisible by two; in other words, when di... Full Answer >
Filed Under:
• A: An integer is a positive or negative whole number. For example, 38, 4, 0, -12, -399 are all integers. Fractions, decimals and percents are not integers bec... Full Answer >
Filed Under:
• A: The number 16 is an even number and is the only integer that has the form xy=yx, where x and y are different numbers (2 and 4). Another fact is that the ba... Full Answer >
Filed Under:
• A: Every integer is a rational number. An integer is a whole number, whether positive or negative, including zero. A rational number is any number that is abl... Full Answer >
Filed Under:
PEOPLE SEARCH FOR