What two numbers multiply to 560 and add up to 78?

Here we answer the question: "What two numbers multiply to 560 and add up to 78?"

The answer to your question is:

8 and 70

Below we illustrate and prove that 8 and 70 multiply to 560 and add up to 78:

8 × 70 = 560
8 + 70 = 78

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

x² + 78x + 560 = 0

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

(x + 8 ) (x + 70)

To summarize, since 8 and 70 multiply to 560 and add up 78, you know that the following is true:

x² + 78x + 560 = (x + 8 ) (x + 70)

Multiply To One Number and Add Up To Another
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