What two numbers multiply to -425 and add up to 80?




Here we answer the question: "What two numbers multiply to -425 and add up to 80?"

The answer to your question is:

-5 and 85


Below we illustrate and prove that -5 and 85 multiply to -425 and add up to 80:

-5 × 85 = -425
-5 + 85 = 80

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

x2 + 80x - 425 = 0

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

(x - 5 ) (x + 85)

To summarize, since -5 and 85 multiply to -425 and add up 80, you know that the following is true:

x2 + 80x - 425 = (x - 5 ) (x + 85)


Multiply To One Number and Add Up To Another
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