What two numbers multiply to 308 and add up to 81?

Here we answer the question: "What two numbers multiply to 308 and add up to 81?"

The answer to your question is:

4 and 77

Below we illustrate and prove that 4 and 77 multiply to 308 and add up to 81:

4 × 77 = 308
4 + 77 = 81

Are you asking because you are trying to figure out how to factor the following quadratic equation?

x² + 81x + 308 = 0

If so, the solution to factor the quadratic equation above is:

(x + 4 ) (x + 77)

To summarize, since 4 and 77 multiply to 308 and add up 81, you know that the following is true:

x² + 81x + 308 = (x + 4 ) (x + 77)

Multiply To One Number and Add Up To Another
Did you find the information on this page useful? Here you can solve a similar problem.