What two numbers multiply to -870 and add up to 139?

Here we answer the question: "What two numbers multiply to -870 and add up to 139?"

The answer to your question is:

-6 and 145

Below we illustrate and prove that -6 and 145 multiply to -870 and add up to 139:

-6 × 145 = -870
-6 + 145 = 139

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

x² + 139x - 870 = 0

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

(x - 6 ) (x + 145)

To summarize, since -6 and 145 multiply to -870 and add up 139, you know that the following is true:

x² + 139x - 870 = (x - 6 ) (x + 145)

Multiply To One Number and Add Up To Another
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