Oblicz arianne: [ ( 3 − √5 )span style="font-family:times; margin-left:1px; margin-right:1px">¹₂ + (3 + √5)span style="font-family:times; margin-left:1px; margin-right:1px">¹₂ ]⁻² * [ (²⁷₈)span style="font-family:times; margin-left:1px; margin-right:1px">¹₂ − 28⁰ ]