Here we answer the question: "What two numbers multiply to -430 and add up to -81?"
The answer to your question is:
-86 and 5
Below we illustrate and prove that -86 and 5 multiply to -430 and add up to -81:
-86 × 5 = -430
-86 + 5 = -81
Are you asking because you are trying to figure out how to factor the following quadratic equation?
x2 - 81x - 430 = 0
If so, the solution to factor the quadratic equation above is:
(x - 86 ) (x + 5)
To summarize, since -86 and 5 multiply to -430 and add up -81, you know that the following is true:
x2 - 81x - 430 = (x - 86 ) (x + 5)
Multiply To One Number and Add Up To Another
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