# How do you simplify sqrt 78 - sqrt 8 + sqrt 128?

$\sqrt{78} - \sqrt{8} + \sqrt{128}$
$\sqrt{2 \cdot 3 \cdot 13} - \sqrt{{2}^{3}} + \sqrt{{2}^{7}}$
$\sqrt{78} - \sqrt{{2}^{2} \cdot 2} + \sqrt{{2}^{6} \cdot 2}$
$\sqrt{78} - 2 \sqrt{2} + {2}^{3} \sqrt{2}$
$\sqrt{78} - 6 \sqrt{2}$