What two numbers multiply to 399 and add up to 136?

Here we answer the question: "What two numbers multiply to 399 and add up to 136?"

The answer to your question is:

3 and 133

Below we illustrate and prove that 3 and 133 multiply to 399 and add up to 136:

3 × 133 = 399
3 + 133 = 136

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

x² + 136x + 399 = 0

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

(x + 3 ) (x + 133)

To summarize, since 3 and 133 multiply to 399 and add up 136, you know that the following is true:

x² + 136x + 399 = (x + 3 ) (x + 133)

Multiply To One Number and Add Up To Another
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