What two numbers multiply to 408 and add up to 139?

Here we answer the question: "What two numbers multiply to 408 and add up to 139?"

The answer to your question is:

3 and 136

Below we illustrate and prove that 3 and 136 multiply to 408 and add up to 139:

3 × 136 = 408
3 + 136 = 139

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

x² + 139x + 408 = 0

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

(x + 3 ) (x + 136)

To summarize, since 3 and 136 multiply to 408 and add up 139, you know that the following is true:

x² + 139x + 408 = (x + 3 ) (x + 136)

Multiply To One Number and Add Up To Another
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