Here we answer the question: "What two numbers multiply to -672 and add up to -76?"
The answer to your question is:
-84 and 8
Below we illustrate and prove that -84 and 8 multiply to -672 and add up to -76:
-84 × 8 = -672
-84 + 8 = -76
Are you asking because you are trying to figure out how to factor the following quadratic equation?
x2 - 76x - 672 = 0
If so, the solution to factor the quadratic equation above is:
(x - 84 ) (x + 8)
To summarize, since -84 and 8 multiply to -672 and add up -76, you know that the following is true:
x2 - 76x - 672 = (x - 84 ) (x + 8)
Multiply To One Number and Add Up To Another
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