What two numbers multiply to 98 and add up to -21?

Here we answer the question: "What two numbers multiply to 98 and add up to -21?"

The answer to your question is:

-14 and -7

Below we illustrate and prove that -14 and -7 multiply to 98 and add up to -21:

-14 × -7 = 98
-14 + -7 = -21

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

x² - 21x + 98 = 0

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

(x - 14 ) (x - 7)

To summarize, since -14 and -7 multiply to 98 and add up -21, you know that the following is true:

x² - 21x + 98 = (x - 14 ) (x - 7)

Multiply To One Number and Add Up To Another
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