Question

cat este x la pătrat plus 2 egal cu 4?

Answer 1

x²+2=4; x²=4-2; x²=2; x=√2

Answer 2

$x^2+2=4 \\ \Rightarrow x^2=4-2 \\ x^2=2 \\ \Rightarrow \boxed{x=\sqrt{2}}.$