What two numbers multiply to 900 and add up to 109?

Here we answer the question: "What two numbers multiply to 900 and add up to 109?"

The answer to your question is:

9 and 100

Below we illustrate and prove that 9 and 100 multiply to 900 and add up to 109:

9 × 100 = 900
9 + 100 = 109

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

x² + 109x + 900 = 0

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

(x + 9 ) (x + 100)

To summarize, since 9 and 100 multiply to 900 and add up 109, you know that the following is true:

x² + 109x + 900 = (x + 9 ) (x + 100)

Multiply To One Number and Add Up To Another
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