Express in terms of $y$

Algebra Level 1

If $x\neq 0$ and $x=\sqrt{4xy-4y^2}$ , then express $x$ in terms of $y$ .

-2y

2y

\dfrac{-4y^2}{1-2y}

\dfrac{y}{2}

1 solution

Blcraft Gaming
Feb 22, 2018

$x=\sqrt{4xy-4y^2}$ $x^2=4xy-4y^2$ $x^2-4xy+4y^2=0$ $(x-2y)^2=0$ $x-2y=0$ $\boxed{x=2y}$