Here we answer the question: "What two numbers multiply to 855 and add up to -64?"
The answer to your question is:
-45 and -19
Below we illustrate and prove that -45 and -19 multiply to 855 and add up to -64:
-45 × -19 = 855
-45 + -19 = -64
Are you asking because you are trying to figure out how to factor the following quadratic equation?
x2 - 64x + 855 = 0
If so, the solution to factor the quadratic equation above is:
(x - 45 ) (x - 19)
To summarize, since -45 and -19 multiply to 855 and add up -64, you know that the following is true:
x2 - 64x + 855 = (x - 45 ) (x - 19)
Multiply To One Number and Add Up To Another
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