Here we answer the question: "What two numbers multiply to 989 and add up to 66?"
The answer to your question is:
23 and 43
Below we illustrate and prove that 23 and 43 multiply to 989 and add up to 66:
23 × 43 = 989
23 + 43 = 66
Are you asking because you are trying to figure out how to factor the following quadratic equation?
x2 + 66x + 989 = 0
If so, the solution to factor the quadratic equation above is:
(x + 23 ) (x + 43)
To summarize, since 23 and 43 multiply to 989 and add up 66, you know that the following is true:
x2 + 66x + 989 = (x + 23 ) (x + 43)
Multiply To One Number and Add Up To Another
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