Here we answer the question: "What two numbers multiply to 448 and add up to -71?"
The answer to your question is:
-64 and -7
Below we illustrate and prove that -64 and -7 multiply to 448 and add up to -71:
-64 × -7 = 448
-64 + -7 = -71
Are you asking because you are trying to figure out how to factor the following quadratic equation?
x2 - 71x + 448 = 0
If so, the solution to factor the quadratic equation above is:
(x - 64 ) (x - 7)
To summarize, since -64 and -7 multiply to 448 and add up -71, you know that the following is true:
x2 - 71x + 448 = (x - 64 ) (x - 7)
Multiply To One Number and Add Up To Another
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