Here we answer the question: "What two numbers multiply to -656 and add up to 25?"
The answer to your question is:
-16 and 41
Below we illustrate and prove that -16 and 41 multiply to -656 and add up to 25:
-16 × 41 = -656
-16 + 41 = 25
Are you asking because you are trying to figure out how to factor the following quadratic equation?
x2 + 25x - 656 = 0
If so, the solution to factor the quadratic equation above is:
(x - 16 ) (x + 41)
To summarize, since -16 and 41 multiply to -656 and add up 25, you know that the following is true:
x2 + 25x - 656 = (x - 16 ) (x + 41)
Multiply To One Number and Add Up To Another
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