What two numbers multiply to 820 and add up to 209?

Here we answer the question: "What two numbers multiply to 820 and add up to 209?"

The answer to your question is:

4 and 205

Below we illustrate and prove that 4 and 205 multiply to 820 and add up to 209:

4 × 205 = 820
4 + 205 = 209

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

x² + 209x + 820 = 0

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

(x + 4 ) (x + 205)

To summarize, since 4 and 205 multiply to 820 and add up 209, you know that the following is true:

x² + 209x + 820 = (x + 4 ) (x + 205)

Multiply To One Number and Add Up To Another
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