Here we answer the question: "What two numbers multiply to -380 and add up to 28?"
The answer to your question is:
-10 and 38
Below we illustrate and prove that -10 and 38 multiply to -380 and add up to 28:
-10 × 38 = -380
-10 + 38 = 28
Are you asking because you are trying to figure out how to factor the following quadratic equation?
x2 + 28x - 380 = 0
If so, the solution to factor the quadratic equation above is:
(x - 10 ) (x + 38)
To summarize, since -10 and 38 multiply to -380 and add up 28, you know that the following is true:
x2 + 28x - 380 = (x - 10 ) (x + 38)
Multiply To One Number and Add Up To Another
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