What two numbers multiply to 855 and add up to 72?

Here we answer the question: "What two numbers multiply to 855 and add up to 72?"

The answer to your question is:

15 and 57

Below we illustrate and prove that 15 and 57 multiply to 855 and add up to 72:

15 × 57 = 855
15 + 57 = 72

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

x² + 72x + 855 = 0

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

(x + 15 ) (x + 57)

To summarize, since 15 and 57 multiply to 855 and add up 72, you know that the following is true:

x² + 72x + 855 = (x + 15 ) (x + 57)

Multiply To One Number and Add Up To Another
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