Here we answer the question: "What two numbers multiply to -380 and add up to 1?"
The answer to your question is:
-19 and 20
Below we illustrate and prove that -19 and 20 multiply to -380 and add up to 1:
-19 × 20 = -380
-19 + 20 = 1
Are you asking because you are trying to figure out how to factor the following quadratic equation?
x2 + 1x - 380 = 0
If so, the solution to factor the quadratic equation above is:
(x - 19 ) (x + 20)
To summarize, since -19 and 20 multiply to -380 and add up 1, you know that the following is true:
x2 + 1x - 380 = (x - 19 ) (x + 20)
Multiply To One Number and Add Up To Another
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