Here we answer the question: "What two numbers multiply to -828 and add up to 57?"
The answer to your question is:
-12 and 69
Below we illustrate and prove that -12 and 69 multiply to -828 and add up to 57:
-12 × 69 = -828
-12 + 69 = 57
Are you asking because you are trying to figure out how to factor the following quadratic equation?
x2 + 57x - 828 = 0
If so, the solution to factor the quadratic equation above is:
(x - 12 ) (x + 69)
To summarize, since -12 and 69 multiply to -828 and add up 57, you know that the following is true:
x2 + 57x - 828 = (x - 12 ) (x + 69)
Multiply To One Number and Add Up To Another
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