Here we answer the question: "What two numbers multiply to 672 and add up to 58?"
The answer to your question is:
16 and 42
Below we illustrate and prove that 16 and 42 multiply to 672 and add up to 58:
16 × 42 = 672
16 + 42 = 58
Are you asking because you are trying to figure out how to factor the following quadratic equation?
x2 + 58x + 672 = 0
If so, the solution to factor the quadratic equation above is:
(x + 16 ) (x + 42)
To summarize, since 16 and 42 multiply to 672 and add up 58, you know that the following is true:
x2 + 58x + 672 = (x + 16 ) (x + 42)
Multiply To One Number and Add Up To Another
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