Here we answer the question: "What two numbers multiply to -669 and add up to 220?"
The answer to your question is:
-3 and 223
Below we illustrate and prove that -3 and 223 multiply to -669 and add up to 220:
-3 × 223 = -669
-3 + 223 = 220
Are you asking because you are trying to figure out how to factor the following quadratic equation?
x2 + 220x - 669 = 0
If so, the solution to factor the quadratic equation above is:
(x - 3 ) (x + 223)
To summarize, since -3 and 223 multiply to -669 and add up 220, you know that the following is true:
x2 + 220x - 669 = (x - 3 ) (x + 223)
Multiply To One Number and Add Up To Another
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