Here we answer the question: "What two numbers multiply to -540 and add up to 131?"
The answer to your question is:
-4 and 135
Below we illustrate and prove that -4 and 135 multiply to -540 and add up to 131:
-4 × 135 = -540
-4 + 135 = 131
Are you asking because you are trying to figure out how to factor the following quadratic equation?
x2 + 131x - 540 = 0
If so, the solution to factor the quadratic equation above is:
(x - 4 ) (x + 135)
To summarize, since -4 and 135 multiply to -540 and add up 131, you know that the following is true:
x2 + 131x - 540 = (x - 4 ) (x + 135)
Multiply To One Number and Add Up To Another
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