Question

Im a bit confused on this one...ill give a medal (:

Answer 1

\[2x=\sqrt{20+2x}\]

Answer 2

x = 5/2

Answer 3

thanks! would you mind showing me how you got that?

Answer 4

square both sides and get
\[4x^2=20+2x\] then solve the quadratic equation

Answer 5

Back sorry, like satelite said square both sides,. By squaring both side it allows you to get rid of the square root

Answer 6

Before you squaring the two sides you have to be careful that :
\[2x\geq0\text{ et } 20+2x\geq 0\]

Answer 7

thank you!