What two numbers will multiply to 5 and add to 4?

Answer 1

There are no two real numbers that do, but the complex numbers (2 + i) and (2 - i) will.

If you want two numbers that multiply to negative 5 and add to positive 4 then: -1 and 5

If you want two numbers that multiply to negative 5 and add to negative 4 then: 1 and -5