What two numbers multiply to -642 and add up to 101?

Here we answer the question: "What two numbers multiply to -642 and add up to 101?"

The answer to your question is:

-6 and 107

Below we illustrate and prove that -6 and 107 multiply to -642 and add up to 101:

-6 × 107 = -642
-6 + 107 = 101

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

x² + 101x - 642 = 0

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

(x - 6 ) (x + 107)

To summarize, since -6 and 107 multiply to -642 and add up 101, you know that the following is true:

x² + 101x - 642 = (x - 6 ) (x + 107)

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.