What two numbers multiply to 42 and add up to 43?

Here we answer the question: "What two numbers multiply to 42 and add up to 43?"

The answer to your question is:

1 and 42

Below we illustrate and prove that 1 and 42 multiply to 42 and add up to 43:

1 × 42 = 42
1 + 42 = 43

Are you asking because you are trying to figure out how to factor the following quadratic equation?

x² + 43x + 42 = 0

If so, the solution to factor the quadratic equation above is:

(x + 1 ) (x + 42)

To summarize, since 1 and 42 multiply to 42 and add up 43, you know that the following is true:

x² + 43x + 42 = (x + 1 ) (x + 42)

Multiply To One Number and Add Up To Another
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