What two numbers multiply to 660 and add up to 661?

Here we answer the question: "What two numbers multiply to 660 and add up to 661?"

The answer to your question is:

1 and 660

Below we illustrate and prove that 1 and 660 multiply to 660 and add up to 661:

1 × 660 = 660
1 + 660 = 661

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

x² + 661x + 660 = 0

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

(x + 1 ) (x + 660)

To summarize, since 1 and 660 multiply to 660 and add up 661, you know that the following is true:

x² + 661x + 660 = (x + 1 ) (x + 660)

Multiply To One Number and Add Up To Another
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