What two numbers multiply to 678 and add up to -679?

Here we answer the question: "What two numbers multiply to 678 and add up to -679?"

The answer to your question is:

-678 and -1

Below we illustrate and prove that -678 and -1 multiply to 678 and add up to -679:

-678 × -1 = 678
-678 + -1 = -679

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

x² - 679x + 678 = 0

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

(x - 678 ) (x - 1)

To summarize, since -678 and -1 multiply to 678 and add up -679, you know that the following is true:

x² - 679x + 678 = (x - 678 ) (x - 1)

Multiply To One Number and Add Up To Another
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