What two numbers multiply to -679 and add up to -90?




Here we answer the question: "What two numbers multiply to -679 and add up to -90?"

The answer to your question is:

-97 and 7


Below we illustrate and prove that -97 and 7 multiply to -679 and add up to -90:

-97 × 7 = -679
-97 + 7 = -90

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

x2 - 90x - 679 = 0

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

(x - 97 ) (x + 7)

To summarize, since -97 and 7 multiply to -679 and add up -90, you know that the following is true:

x2 - 90x - 679 = (x - 97 ) (x + 7)


Multiply To One Number and Add Up To Another
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