Question

(5^12:5^10-4^18:4^16):3^2=x

Answer 1

[tex]x=(5^{12}:5^{10}-4^{18}-4^{16}):3^2 \\ x=(5^{12-10}-4^{18-16}):9 \\ x=(5^-4^2):9 \\ x=(25-16):9 \\ x=9:9 \\ \boxed{x=1}[/tex]