Question

(x radical din 3)la patrat

Answer 1

xpatrat *9 =0
9xpatrat=0
xpatrat=0/9
x=0 

Answer 2

$(x \sqrt{3})^{2}= x^{2} \cdot ( \sqrt{3})^{2}= x^{2} \cdot \sqrt{9}=3\cdot x^{2} .$