B
b001997hb


$\sqrt{x^2+2x} + \sqrt{2x-1} = \sqrt{3x^2+4x+1} $
$\sqrt{x+\sqrt{x+11}} + \sqrt{x-\sqrt{x+11}} = 4$
$\sqrt{x+\sqrt{x+11}} + \sqrt{x-\sqrt{x+11}} = 4$
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