Here we answer the question: "What two numbers multiply to 455 and add up to -72?"
The answer to your question is:
-65 and -7
Below we illustrate and prove that -65 and -7 multiply to 455 and add up to -72:
-65 × -7 = 455
-65 + -7 = -72
Are you asking because you are trying to figure out how to factor the following quadratic equation?
x2 - 72x + 455 = 0
If so, the solution to factor the quadratic equation above is:
(x - 65 ) (x - 7)
To summarize, since -65 and -7 multiply to 455 and add up -72, you know that the following is true:
x2 - 72x + 455 = (x - 65 ) (x - 7)
Multiply To One Number and Add Up To Another
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