find the roots of x^2+6x+8=0
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Answer:
x
2
- 6x + 8 = 0
x
2
- 4x -2x + 8 = 0
x(x - 4) - 2(x - 4) = 0
(x - 2)(x - 4) = 0
x - 2 = 0 or x - 4 = 0
x = 2 or x = 4
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