Here we answer the question: "What two numbers multiply to -845 and add up to -164?"
The answer to your question is:
-169 and 5
Below we illustrate and prove that -169 and 5 multiply to -845 and add up to -164:
-169 × 5 = -845
-169 + 5 = -164
Are you asking because you are trying to figure out how to factor the following quadratic equation?
x2 - 164x - 845 = 0
If so, the solution to factor the quadratic equation above is:
(x - 169 ) (x + 5)
To summarize, since -169 and 5 multiply to -845 and add up -164, you know that the following is true:
x2 - 164x - 845 = (x - 169 ) (x + 5)
Multiply To One Number and Add Up To Another
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