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Q: Solve x2 + 9x + 8 = 0. What are the solutions? {1,-8} {1, 8} {-1,-8}
A: x^2 + 9x + 8 = 0; x^2 + 9x + 8 = (x + 8)(x + 1) (x + 8) = 0; x = -8 (x + 1) = 0; x = -1 the solutions are {-8, -1}
Original conversation
User: Solve x2 + 9x + 8 = 0. What are the solutions? {1,-8} {1, 8} {-1,-8}

Question
Updated 6/23/2014 5:46:27 PM
Edited by andrewpallarca [6/23/2014 5:45:01 PM], Flagged by andrewpallarca [6/23/2014 5:46:27 PM]
Rating
3
x^2 + 9x + 8 = 0;

x^2 + 9x + 8 = (x + 8)(x + 1)

(x + 8) = 0;
x = -8

(x + 1) = 0;
x = -1

the solutions are {-8, -1}

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