## anonymous 4 years ago How does (40/square root 2) becomes 8*square root 2?

1. anonymous

$20\sqrt{2}$

2. Mertsj

|dw:1328719274615:dw|

3. Kainui

$(40/\sqrt{2}) *(\sqrt{2}/\sqrt{2})$ Simply by multiplying by a number over itself is a clever way of changing a number into a slightly different form. You can do this because any number divided by itself equals 1, just like 5*1=5.

4. TuringTest

...so the answer is that 40/sqrt2 becomes 8sqrt2 by multiplying by 2/5 :P