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(3^52-3^51-3^50):(9^50*25)


Răspuns :

=3^50(3²-3-1):[(3²)^50·5²=
=3^50·5:(3^100·5²=
=3^(50-100)·5^(1-2)=
=3^(-50)·5^-1=1/(3^50·5)=1/15^50
3⁵⁰(3²-3-1):(3²)⁵⁰·5²=
3⁵⁰·5:(3²)⁵°·5²=
3⁵⁰·5:3¹°°·5²=3⁻⁵⁰·5⁻¹