Snehk's Dreamlands

I was coming back home from school. I invited some classmates earlier to create a group that'd prepare better for final exams. I reached my house, but nobody came for preparations. I went to my room and took a pen and paper sheet. I started writing down some calculations. I written something like 2*2(1-2), and when I looked at it again the equation resolved itself into -2. I thought that it's impossible and left the sheet with calculations on a desk, then went to kitchen. Mother talked about preparations with me.