Here we answer the question: "What two numbers multiply to -580 and add up to -9?"
The answer to your question is:
-29 and 20
Below we illustrate and prove that -29 and 20 multiply to -580 and add up to -9:
-29 × 20 = -580
-29 + 20 = -9
Are you asking because you are trying to figure out how to factor the following quadratic equation?
x2 - 9x - 580 = 0
If so, the solution to factor the quadratic equation above is:
(x - 29 ) (x + 20)
To summarize, since -29 and 20 multiply to -580 and add up -9, you know that the following is true:
x2 - 9x - 580 = (x - 29 ) (x + 20)
Multiply To One Number and Add Up To Another
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