What two numbers multiply to 669 and add up to 670?

Here we answer the question: "What two numbers multiply to 669 and add up to 670?"

The answer to your question is:

1 and 669

Below we illustrate and prove that 1 and 669 multiply to 669 and add up to 670:

1 × 669 = 669
1 + 669 = 670

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

x² + 670x + 669 = 0

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

(x + 1 ) (x + 669)

To summarize, since 1 and 669 multiply to 669 and add up 670, you know that the following is true:

x² + 670x + 669 = (x + 1 ) (x + 669)

Multiply To One Number and Add Up To Another
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