oblicz Greq: Oblicz: [(9−17span style="font-family:times; margin-left:1px; margin-right:1px">¹₂)span style="font-family:times; margin-left:1px; margin-right:1px">¹₂+(9+17span style="font-family:times; margin-left:1px; margin-right:1px">¹₂)span style="font-family:times; margin-left:1px; margin-right:1px">¹₂]²