Here we answer the question: "What two numbers multiply to -448 and add up to -57?"
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 -57:
-64 × 7 = -448
-64 + 7 = -57
Are you asking because you are trying to figure out how to factor the following quadratic equation?
x2 - 57x - 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 -57, you know that the following is true:
x2 - 57x - 448 = (x - 64 ) (x + 7)
Multiply To One Number and Add Up To Another
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