Here we answer the question: "What two numbers multiply to 720 and add up to -63?"
The answer to your question is:
-48 and -15
Below we illustrate and prove that -48 and -15 multiply to 720 and add up to -63:
-48 × -15 = 720
-48 + -15 = -63
Are you asking because you are trying to figure out how to factor the following quadratic equation?
x2 - 63x + 720 = 0
If so, the solution to factor the quadratic equation above is:
(x - 48 ) (x - 15)
To summarize, since -48 and -15 multiply to 720 and add up -63, you know that the following is true:
x2 - 63x + 720 = (x - 48 ) (x - 15)
Multiply To One Number and Add Up To Another
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