What two numbers multiply to 42 and add up to 23?




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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