What two numbers multiply to -160 and add up to 78?

Here we answer the question: "What two numbers multiply to -160 and add up to 78?"

The answer to your question is:

-2 and 80

Below we illustrate and prove that -2 and 80 multiply to -160 and add up to 78:

-2 × 80 = -160
-2 + 80 = 78

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

x² + 78x - 160 = 0

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

(x - 2 ) (x + 80)

To summarize, since -2 and 80 multiply to -160 and add up 78, you know that the following is true:

x² + 78x - 160 = (x - 2 ) (x + 80)

Multiply To One Number and Add Up To Another
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