Here we answer the question: "What two numbers multiply to -91 and add up to 6?"
The answer to your question is:
-7 and 13
Below we illustrate and prove that -7 and 13 multiply to -91 and add up to 6:
-7 × 13 = -91
-7 + 13 = 6
Are you asking because you are trying to figure out how to factor the following quadratic equation?
x2 + 6x - 91 = 0
If so, the solution to factor the quadratic equation above is:
(x - 7 ) (x + 13)
To summarize, since -7 and 13 multiply to -91 and add up 6, you know that the following is true:
x2 + 6x - 91 = (x - 7 ) (x + 13)
Multiply To One Number and Add Up To Another
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