25^12:4^22+3^22-1=
=(5^2)^12 : (4^0)^22+(3^0)^22-1=
=5^24 :1^22+1^22-1=
=(5^0)24:1+1-1=
=1^24:1+1-1=
=1:1+0=
=1+0=
=1
