What two numbers multiply to 642 and add up to -323?

Here we answer the question: "What two numbers multiply to 642 and add up to -323?"

The answer to your question is:

-321 and -2

Below we illustrate and prove that -321 and -2 multiply to 642 and add up to -323:

-321 × -2 = 642
-321 + -2 = -323

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

x² - 323x + 642 = 0

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

(x - 321 ) (x - 2)

To summarize, since -321 and -2 multiply to 642 and add up -323, you know that the following is true:

x² - 323x + 642 = (x - 321 ) (x - 2)

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.