\frac(3 + \sqrt7)(1 + \sqrt7)3(1 - 7) = \frac3(1) + 3\sqrt7 + \sqrt7 + 73(-6) = \frac10 + 4\sqrt7-18 = -\frac10 + 4\sqrt718 = -\frac5 + 2\sqrt79. - Veritas Home Health