What two numbers multiply to -20 and add up to 19?

Here we answer the question: "What two numbers multiply to -20 and add up to 19?"

The answer to your question is:

-1 and 20

Below we illustrate and prove that -1 and 20 multiply to -20 and add up to 19:

-1 × 20 = -20
-1 + 20 = 19

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

x² + 19x - 20 = 0

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

(x - 1 ) (x + 20)

To summarize, since -1 and 20 multiply to -20 and add up 19, you know that the following is true:

x² + 19x - 20 = (x - 1 ) (x + 20)

Multiply To One Number and Add Up To Another
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