What two numbers multiply to -84 and add up to 25?




Here we answer the question: "What two numbers multiply to -84 and add up to 25?"

The answer to your question is:

-3 and 28


Below we illustrate and prove that -3 and 28 multiply to -84 and add up to 25:

-3 × 28 = -84
-3 + 28 = 25

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

x2 + 25x - 84 = 0

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

(x - 3 ) (x + 28)

To summarize, since -3 and 28 multiply to -84 and add up 25, you know that the following is true:

x2 + 25x - 84 = (x - 3 ) (x + 28)


Multiply To One Number and Add Up To Another
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