Question

2radical of 125-2radical of 5

Subtract by collecting like terms.

Answer 1

\[\Large 2\sqrt{125}-2\sqrt{5}\]


\[\Large 2\sqrt{25*5}-2\sqrt{5}\]


\[\Large 2\sqrt{25}*\sqrt{5}-2\sqrt{5}\]


\[\Large 2*5*\sqrt{5}-2\sqrt{5}\]


\[\Large 10\sqrt{5}-2\sqrt{5}\]


\[\Large (10-2)\sqrt{5}\]


\[\Large 8\sqrt{5}\]

So \[\Large 2\sqrt{125}-2\sqrt{5}=8\sqrt{5}\]