radicales

Simplifica la expresión: $\sqrt{2} + 5\sqrt{2} - 12\sqrt{2} + 3\sqrt{2}$

SOLUCIÓN

$\sqrt{2} + 5\sqrt{2} - 12\sqrt{2} + 3\sqrt{2} =$
$(1+5-12+3)\sqrt{2} = -3 \sqrt{2}$