Here we answer the question: "What two numbers multiply to -621 and add up to -4?"
The answer to your question is:
-27 and 23
Below we illustrate and prove that -27 and 23 multiply to -621 and add up to -4:
-27 × 23 = -621
-27 + 23 = -4
Are you asking because you are trying to figure out how to factor the following quadratic equation?
x2 - 4x - 621 = 0
If so, the solution to factor the quadratic equation above is:
(x - 27 ) (x + 23)
To summarize, since -27 and 23 multiply to -621 and add up -4, you know that the following is true:
x2 - 4x - 621 = (x - 27 ) (x + 23)
Multiply To One Number and Add Up To Another
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