Here we answer the question: "What two numbers multiply to -834 and add up to -415?"
The answer to your question is:
-417 and 2
Below we illustrate and prove that -417 and 2 multiply to -834 and add up to -415:
-417 × 2 = -834
-417 + 2 = -415
Are you asking because you are trying to figure out how to factor the following quadratic equation?
x2 - 415x - 834 = 0
If so, the solution to factor the quadratic equation above is:
(x - 417 ) (x + 2)
To summarize, since -417 and 2 multiply to -834 and add up -415, you know that the following is true:
x2 - 415x - 834 = (x - 417 ) (x + 2)
Multiply To One Number and Add Up To Another
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