1-[7 i 1/5 - 5,68]∙[3,2-3,02]
źródło:
1-(7\frac{1}{5}-5,68)*(3,2-3,02)=1-(7,2-5,68)*0,18=1-1,52*0,18=1-0,2736=0,7264
http://www.google.com/search?client=ubuntu&channel=fs&q=+1-%287%2C2±+5%2C68%29*%283%2C2-3%2C02%29&ie=utf-8&oe=utf-8