What two numbers multiply to -490 and add up to -489?

Here we answer the question: "What two numbers multiply to -490 and add up to -489?"

The answer to your question is:

-490 and 1

Below we illustrate and prove that -490 and 1 multiply to -490 and add up to -489:

-490 × 1 = -490
-490 + 1 = -489

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

x² - 489x - 490 = 0

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

(x - 490 ) (x + 1)

To summarize, since -490 and 1 multiply to -490 and add up -489, you know that the following is true:

x² - 489x - 490 = (x - 490 ) (x + 1)

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.