What two numbers multiply to -657 and add up to -64?

Here we answer the question: "What two numbers multiply to -657 and add up to -64?"

The answer to your question is:

-73 and 9

Below we illustrate and prove that -73 and 9 multiply to -657 and add up to -64:

-73 × 9 = -657
-73 + 9 = -64

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

x² - 64x - 657 = 0

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

(x - 73 ) (x + 9)

To summarize, since -73 and 9 multiply to -657 and add up -64, you know that the following is true:

x² - 64x - 657 = (x - 73 ) (x + 9)

Multiply To One Number and Add Up To Another
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