What two numbers multiply to -630 and add up to 61?

Here we answer the question: "What two numbers multiply to -630 and add up to 61?"

The answer to your question is:

-9 and 70

Below we illustrate and prove that -9 and 70 multiply to -630 and add up to 61:

-9 × 70 = -630
-9 + 70 = 61

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

x² + 61x - 630 = 0

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

(x - 9 ) (x + 70)

To summarize, since -9 and 70 multiply to -630 and add up 61, you know that the following is true:

x² + 61x - 630 = (x - 9 ) (x + 70)

Multiply To One Number and Add Up To Another
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