What two numbers multiply to -439 and add up to 438?

Here we answer the question: "What two numbers multiply to -439 and add up to 438?"

The answer to your question is:

-1 and 439

Below we illustrate and prove that -1 and 439 multiply to -439 and add up to 438:

-1 × 439 = -439
-1 + 439 = 438

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

x² + 438x - 439 = 0

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

(x - 1 ) (x + 439)

To summarize, since -1 and 439 multiply to -439 and add up 438, you know that the following is true:

x² + 438x - 439 = (x - 1 ) (x + 439)

Multiply To One Number and Add Up To Another
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