Question 390472
find the second root of the quadratic equation 
x^2 + 9x + k = 0 if one root is -2.
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Using synthetic division you get:
-2)....1....9....k
.........1....7...|k-14
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Solve k-14 = 0
k = 14
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Notice the quotient is x+7
So the 2nd root is x=-7
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Cheers,
Stan H.