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}