Here we answer the question: "What two numbers multiply to -206 and add up to -205?"
The answer to your question is:
-206 and 1
Below we illustrate and prove that -206 and 1 multiply to -206 and add up to -205:
-206 × 1 = -206
-206 + 1 = -205
Are you asking because you are trying to figure out how to factor the following quadratic equation?
x2 - 205x - 206 = 0
If so, the solution to factor the quadratic equation above is:
(x - 206 ) (x + 1)
To summarize, since -206 and 1 multiply to -206 and add up -205, you know that the following is true:
x2 - 205x - 206 = (x - 206 ) (x + 1)
Multiply To One Number and Add Up To Another
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