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:

7 and 14

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

7 × 14 = 98
7 + 14 = 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 + 7 ) (x + 14)

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

x² + 21x + 98 = (x + 7 ) (x + 14)

Multiply To One Number and Add Up To Another
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