4 x ^ { 2 } + 12 x + 3 = 0 ( b ) \cdot 2 x + 1 = \frac { 5 } { x + 2 } – InterviewSolution

1.	4 x ^ { 2 } + 12 x + 3 = 0 ( b ) \cdot 2 x + 1 = \frac { 5 } { x + 2 } ( c ) \frac { x + 1 } { x } - \frac { x } { x + 1 } = 0
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