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Posted by Sammie on Wednesday, July 25, 2012 at 8:40am.

solve by factoring: 7y^2+12y+13=3y^2+4

7y^2+12y+13=3y^2+4 4y^2 + 12y + 9 = 0 (2y+3)(2y+3) = 0 ---> perfect square, double root y = -3/2

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