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Chi Chi
Mathematics
2 February, 11:02
Solve by factoring.
x2 + 6x = - 9. Hint: This is a double root.
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Lane
2 February, 11:29
0
X^2 + 6x = - 9
(x + 3) ^2 - 9 = - 9
(x + 3) ^2 = - 9 + 9 = 0
x + 3 = 0
x = - 3 (double root)
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