What is the simplest form of the expression? sqrt 2 - sqrt 6 / sqrt 2 + sqrt 6
\(\displaystyle \\
\frac{ \sqrt{2} -\sqrt{6}}{\sqrt{2} +\sqrt{6}} = \frac{ (\sqrt{2} -\sqrt{6})(\sqrt{2} -\sqrt{6})}{(\sqrt{2} +\sqrt{6})(\sqrt{2} -\sqrt{6})} = \\ \\ \\
= \frac{ (\sqrt{2} -\sqrt{6})^2}{(\sqrt{2})^2 -(\sqrt{6})^2} = \frac{ 2-2\sqrt{2}\sqrt{6} + 6}{2 -6} = \\ \\ \\
= \frac{ 8-2\sqrt{12} }{-4} = \frac{ 8-2\sqrt{4\times 3} }{-4} = \frac{ 8-4\sqrt{3} }{-4} = \boxed{-2+\sqrt{3}}\)
Answer:
\(-2+\sqrt{3}\)
Step-by-step explanation:
we have
\(\frac{\sqrt{2}-\sqrt{6}}{\sqrt{2}+\sqrt{6}}\)
Multiply the expression by the conjugate of denominator
\(\frac{\sqrt{2}-\sqrt{6}}{\sqrt{2}+\sqrt{6}}*\frac{\sqrt{2}-\sqrt{6}}{\sqrt{2}-\sqrt{6}}\\ \\=-(\sqrt{2}-\sqrt{6})^{2}/4\)
\(=-(1/4)*(2-4\sqrt{3}+6)\\ \\=-(1/4)*(8-4\sqrt{3})\\ \\=-2+\sqrt{3}\)