Mathematics
gainesml23
2015-11-01 04:58:06
Solve by Completing the square: 2n^2 + 12n + 10=0
ANSWERS
verolini
2015-11-01 06:17:47

1. Divide the eqn. by 2.  ---> 2n^2 + 12n + 10 = 0 ---> n^2 + 6n + 5 = 0  2. Foil  ---> (n+5)(n+1) = 0  3. Solve: n = -5, -1

MattieEgo613
2015-11-01 06:19:02

using completing the square 2n^2 + 12n + 10 = 0 2(n^2 + 6n)  = -10 2 ( (n + 3)^2 - 9) = -10 2(n + 3)^2  = -10 + 18 = 8 (n + 3)^2 = 4 n + 3  = 2 0r -2 answer is  n = -1 ,   -5

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