What two numbers multiply to 664 and add up to 665?

Here we answer the question: "What two numbers multiply to 664 and add up to 665?"

The answer to your question is:

1 and 664

Below we illustrate and prove that 1 and 664 multiply to 664 and add up to 665:

1 × 664 = 664
1 + 664 = 665

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

x² + 665x + 664 = 0

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

(x + 1 ) (x + 664)

To summarize, since 1 and 664 multiply to 664 and add up 665, you know that the following is true:

x² + 665x + 664 = (x + 1 ) (x + 664)

Multiply To One Number and Add Up To Another
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