Here we answer the question: "What two numbers multiply to -989 and add up to 20?"
The answer to your question is:
-23 and 43
Below we illustrate and prove that -23 and 43 multiply to -989 and add up to 20:
-23 × 43 = -989
-23 + 43 = 20
Are you asking because you are trying to figure out how to factor the following quadratic equation?
x2 + 20x - 989 = 0
If so, the solution to factor the quadratic equation above is:
(x - 23 ) (x + 43)
To summarize, since -23 and 43 multiply to -989 and add up 20, you know that the following is true:
x2 + 20x - 989 = (x - 23 ) (x + 43)
Multiply To One Number and Add Up To Another
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