Answer
$$ = {{\sqrt{15}\,\ln \left(2\,x^2+x+2\right)-50\,\arctan \left({{4\,x+ 1}\over{\sqrt{15}}}\right)-22\,\sqrt{15}\,\ln \left(2\,x+1\right)+ 20\,\sqrt{15}\,\ln \left(2\,x-1\right)}\over{64\,\sqrt{15}}} $$
Explanation
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