What two numbers multiply to -880 and add up to 78?




Here we answer the question: "What two numbers multiply to -880 and add up to 78?"

The answer to your question is:

-10 and 88


Below we illustrate and prove that -10 and 88 multiply to -880 and add up to 78:

-10 × 88 = -880
-10 + 88 = 78

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

x2 + 78x - 880 = 0

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

(x - 10 ) (x + 88)

To summarize, since -10 and 88 multiply to -880 and add up 78, you know that the following is true:

x2 + 78x - 880 = (x - 10 ) (x + 88)


Multiply To One Number and Add Up To Another
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