x = \frac { \sqrt { 3 } + 1 } { 2 } , \text { find the value of } 4 x – InterviewSolution

1.	x = \frac { \sqrt { 3 } + 1 } { 2 } , \text { find the value of } 4 x ^ { 3 } + 2 x ^ { 2 } - 8 x + 7
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