confused about equation Solve $x^2 – 50 = 0$

Question

I found the solution to above involved the following steps $$\begin{align} x^2-50=0&\implies x^2=50\\ &\implies\sqrt{x^2}=\sqrt{50}\\ &\implies x=\pm\sqrt{50}\\ &\implies x=\pm\sqrt{2\cdot 25}\\ &\implies x=\pm 5\sqrt{2}. \end{align}$$

why is ±sqrt(2.25) in the steps, it obviously not the square root of 50 or I am missing something my math is still baby.

Answer 1

The dot here is used for multiplication and not as a decimal mark.Depending on context this could be because some sites which can't display math can't type $\cdot$ so they type . instead or because some countries simply use . as multiplication