What two numbers multiply to 648 and add up to 649?

Here we answer the question: "What two numbers multiply to 648 and add up to 649?"

The answer to your question is:

1 and 648

Below we illustrate and prove that 1 and 648 multiply to 648 and add up to 649:

1 × 648 = 648
1 + 648 = 649

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

x² + 649x + 648 = 0

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

(x + 1 ) (x + 648)

To summarize, since 1 and 648 multiply to 648 and add up 649, you know that the following is true:

x² + 649x + 648 = (x + 1 ) (x + 648)

Multiply To One Number and Add Up To Another
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