What two numbers multiply to 640 and add up to -322?

Here we answer the question: "What two numbers multiply to 640 and add up to -322?"

The answer to your question is:

-320 and -2

Below we illustrate and prove that -320 and -2 multiply to 640 and add up to -322:

-320 × -2 = 640
-320 + -2 = -322

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

x² - 322x + 640 = 0

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

(x - 320 ) (x - 2)

To summarize, since -320 and -2 multiply to 640 and add up -322, you know that the following is true:

x² - 322x + 640 = (x - 320 ) (x - 2)

Multiply To One Number and Add Up To Another
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