Here we answer the question: "What two numbers multiply to 855 and add up to -72?"
The answer to your question is:
-57 and -15
Below we illustrate and prove that -57 and -15 multiply to 855 and add up to -72:
-57 × -15 = 855
-57 + -15 = -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 - 57 ) (x - 15)
To summarize, since -57 and -15 multiply to 855 and add up -72, you know that the following is true:
x2 - 72x + 855 = (x - 57 ) (x - 15)
Multiply To One Number and Add Up To Another
Did you find the information on this page useful? Here you can solve a similar problem.