Here we answer the question: "What two numbers multiply to -765 and add up to -28?"
The answer to your question is:
-45 and 17
Below we illustrate and prove that -45 and 17 multiply to -765 and add up to -28:
-45 × 17 = -765
-45 + 17 = -28
Are you asking because you are trying to figure out how to factor the following quadratic equation?
x2 - 28x - 765 = 0
If so, the solution to factor the quadratic equation above is:
(x - 45 ) (x + 17)
To summarize, since -45 and 17 multiply to -765 and add up -28, you know that the following is true:
x2 - 28x - 765 = (x - 45 ) (x + 17)
Multiply To One Number and Add Up To Another
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