What two numbers multiply to 645 and add up to -218?

Here we answer the question: "What two numbers multiply to 645 and add up to -218?"

The answer to your question is:

-215 and -3

Below we illustrate and prove that -215 and -3 multiply to 645 and add up to -218:

-215 × -3 = 645
-215 + -3 = -218

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

x² - 218x + 645 = 0

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

(x - 215 ) (x - 3)

To summarize, since -215 and -3 multiply to 645 and add up -218, you know that the following is true:

x² - 218x + 645 = (x - 215 ) (x - 3)

Multiply To One Number and Add Up To Another
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