Here we answer the question: "What two numbers multiply to -516 and add up to 80?"
The answer to your question is:
-6 and 86
Below we illustrate and prove that -6 and 86 multiply to -516 and add up to 80:
-6 × 86 = -516
-6 + 86 = 80
Are you asking because you are trying to figure out how to factor the following quadratic equation?
x2 + 80x - 516 = 0
If so, the solution to factor the quadratic equation above is:
(x - 6 ) (x + 86)
To summarize, since -6 and 86 multiply to -516 and add up 80, you know that the following is true:
x2 + 80x - 516 = (x - 6 ) (x + 86)
Multiply To One Number and Add Up To Another
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