Here we answer the question: "What two numbers multiply to -765 and add up to 28?"
The answer to your question is:
-17 and 45
Below we illustrate and prove that -17 and 45 multiply to -765 and add up to 28:
-17 × 45 = -765
-17 + 45 = 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 - 17 ) (x + 45)
To summarize, since -17 and 45 multiply to -765 and add up 28, you know that the following is true:
x2 + 28x - 765 = (x - 17 ) (x + 45)
Multiply To One Number and Add Up To Another
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