What two numbers multiply to 664 and add up to -91?

Here we answer the question: "What two numbers multiply to 664 and add up to -91?"

The answer to your question is:

-83 and -8

Below we illustrate and prove that -83 and -8 multiply to 664 and add up to -91:

-83 × -8 = 664
-83 + -8 = -91

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

x² - 91x + 664 = 0

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

(x - 83 ) (x - 8)

To summarize, since -83 and -8 multiply to 664 and add up -91, you know that the following is true:

x² - 91x + 664 = (x - 83 ) (x - 8)

Multiply To One Number and Add Up To Another
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