Here we answer the question: "What two numbers multiply to -420 and add up to 23?"
The answer to your question is:
-12 and 35
Below we illustrate and prove that -12 and 35 multiply to -420 and add up to 23:
-12 × 35 = -420
-12 + 35 = 23
Are you asking because you are trying to figure out how to factor the following quadratic equation?
x2 + 23x - 420 = 0
If so, the solution to factor the quadratic equation above is:
(x - 12 ) (x + 35)
To summarize, since -12 and 35 multiply to -420 and add up 23, you know that the following is true:
x2 + 23x - 420 = (x - 12 ) (x + 35)
Multiply To One Number and Add Up To Another
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