Here we answer the question: "What two numbers multiply to 209 and add up to 210?"
The answer to your question is:
1 and 209
Below we illustrate and prove that 1 and 209 multiply to 209 and add up to 210:
1 × 209 = 209
1 + 209 = 210
Are you asking because you are trying to figure out how to factor the following quadratic equation?
x2 + 210x + 209 = 0
If so, the solution to factor the quadratic equation above is:
(x + 1 ) (x + 209)
To summarize, since 1 and 209 multiply to 209 and add up 210, you know that the following is true:
x2 + 210x + 209 = (x + 1 ) (x + 209)
Multiply To One Number and Add Up To Another
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