happens if and only if one of the next options occurs
[tex]\begin{gathered} 2x-4=0 \\ x+5=0 \end{gathered}[/tex]Then, x can only be one of the next two options
[tex]\begin{gathered} 2x-4=0 \\ 2x=4 \\ x=2 \end{gathered}[/tex]or
[tex]\begin{gathered} x+5=0 \\ x=-5 \end{gathered}[/tex]In conclusion, the only two options for x to satisfy the equality are x=2 or x=-5
