What two numbers multiply to -87 and add up to 86?




Here we answer the question: "What two numbers multiply to -87 and add up to 86?"

The answer to your question is:

-1 and 87


Below we illustrate and prove that -1 and 87 multiply to -87 and add up to 86:

-1 × 87 = -87
-1 + 87 = 86

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

x2 + 86x - 87 = 0

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

(x - 1 ) (x + 87)

To summarize, since -1 and 87 multiply to -87 and add up 86, you know that the following is true:

x2 + 86x - 87 = (x - 1 ) (x + 87)


Multiply To One Number and Add Up To Another
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