Here we answer the question: "What two numbers multiply to 660 and add up to -67?"
The answer to your question is:
-55 and -12
Below we illustrate and prove that -55 and -12 multiply to 660 and add up to -67:
-55 × -12 = 660
-55 + -12 = -67
Are you asking because you are trying to figure out how to factor the following quadratic equation?
x2 - 67x + 660 = 0
If so, the solution to factor the quadratic equation above is:
(x - 55 ) (x - 12)
To summarize, since -55 and -12 multiply to 660 and add up -67, you know that the following is true:
x2 - 67x + 660 = (x - 55 ) (x - 12)
Multiply To One Number and Add Up To Another
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