Here we answer the question: "What two numbers multiply to -846 and add up to -421?"
The answer to your question is:
-423 and 2
Below we illustrate and prove that -423 and 2 multiply to -846 and add up to -421:
-423 × 2 = -846
-423 + 2 = -421
Are you asking because you are trying to figure out how to factor the following quadratic equation?
x2 - 421x - 846 = 0
If so, the solution to factor the quadratic equation above is:
(x - 423 ) (x + 2)
To summarize, since -423 and 2 multiply to -846 and add up -421, you know that the following is true:
x2 - 421x - 846 = (x - 423 ) (x + 2)
Multiply To One Number and Add Up To Another
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