Question

Giúp mình với mn ơi  2căn8 - 3căn18 + 4căn128 - 5căn32

 

 

Answer 1

\(=4\sqrt{2}-9\sqrt{2}+14\sqrt{2}-20\sqrt{2}=-11\sqrt{2}\)

Answer 2

\(2\sqrt{8}-3\sqrt{18}+4\sqrt{128}-5\sqrt{32}=4\sqrt{2}-9\sqrt{2}+32\sqrt{2}-20\sqrt{2}=7\sqrt{2}\)