Question

the equation is 4r[2]-2r=0
[2] Means square root in the equation

Answer 1

r=0

Answer 2

\(4r^2-2r=0\), take 2r as a common factor, you get \(2r(2r-1)=0\). So r is either \(0\) or \(1/2\).

Answer 3

[2] is square root.

Answer 4

Is the question,
\[4r \sqrt{2} - 2r =0\]

Answer 5

Yes that is the question

Answer 6

Whoops, sorry for the misunderstanding :D

Answer 7

It's ok

Answer 8

So if you take out r, the only possibility is r=0

Answer 9

Thank you very much for your help!!

Answer 10

welcome :)