{"id":"site-2642/zad/8140","paper_id":"site-2642","number":"8140","points":null,"ptype":"open","subject":"matematyka","category":"zbiory","year":0,"month":null,"level":"podstawowa","text":"Liczba (π+1)² - (π-1)² jest równa A. 0 B. 2 C. 4π D. 4π+2","answer":null,"answer_text":null,"solution":null,"image":"img/site/2642/zad-8140.svg","solution_image":"img/site/2642/rozw-8140.svg","topics":null,"page_from":null,"source":"site","answer_source":null,"answer_text_source":null,"solution_source":null,"text_source":"site","source_label":"Matematyka · Zbiory zadań (podstawowa)","subject_label":"Matematyka","category_label":"Zbiory zadań","text_html":"<p>Liczba (π+1)² - (π-1)² jest równa A. 0 B. 2 C. 4π D. 4π+2</p>","solutions":[{"source":"site","label":"matematykaszkolna.pl","kind":"image","image":"/img/site/2642/rozw-8140.svg"}]}