Here we answer the question: "What two numbers multiply to 42 and add up to 23?"
The answer to your question is:
2 and 21
Below we illustrate and prove that 2 and 21 multiply to 42 and add up to 23:
2 × 21 = 42
2 + 21 = 23
Are you asking because you are trying to figure out how to factor the following quadratic equation?
x2 + 23x + 42 = 0
If so, the solution to factor the quadratic equation above is:
(x + 2 ) (x + 21)
To summarize, since 2 and 21 multiply to 42 and add up 23, you know that the following is true:
x2 + 23x + 42 = (x + 2 ) (x + 21)
Multiply To One Number and Add Up To Another
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