Question

Cum rezolv: radical din 3x-2 este egal cu 5

Answer 1

$\sqrt{3x-2} = 5 |^2$

=> |3x-2|=25    => 3x-2=+-25 =>
caz 1 pt 3x-2 = 25 => x1 = 9
caz 2 pt 3x-2 =-25 => x2 =-23/3

Answer 2

$\sqrt{3x-2} =5 \\ ( \sqrt{3x-2} )^2=5^2 \\ 3x-2=25 \\ 3x=25+2 \\ 3x=27 \\ x= \frac{27}{3} \\ x=9$